Tamilnadu Board Biology Question papers for 11th Standard (English Medium) Question paper & Study Materials

11th Standard Biology - Botany - Photosynthesis Model Question Paper - by Priya - Dindigul View & Read

  • 1)

    Which chlorophyll molecule does not have a phytol tail?

  • 2)

    For every CO2 molecule entering the C3 cycle, the number of ATP & NADPH required

  • 3)

    A plant growing in a tree as epiphyte accumulates malic acid in dark and cells contains large storage vacuoles. Identify the of type of pathway that takes place in this plant.

  • 4)

    Energy needed for ATP synthesis in PS II comes from____________.

  • 5)

    Kranz anatomy is one ofthe characteristics of the leaves of

11th Biology - Botany - Mineral Nutrition Model Question Paper - by Priya - Dindigul View & Read

  • 1)

    Which chelating agent found in soil are produced by bacteria?

  • 2)

    Leghaemoglobin is

  • 3)

    Plants deficient of element zinc, shows its effect on the biosynthesis of plant growth hormone

  • 4)

    Minerals that play an important role for activation of enzymes involved in respiration.

  • 5)

    The macro nutrient which is an essential component of all organic compounds yet not obtained by plants from soil is

11th Standard Bio - Botany - Respiration Model Question Paper - by Priya - Dindigul View & Read

  • 1)

    The number of ATP molecules formed by complete oxidation of one molecule of pyruvic acid is

  • 2)

    The compound which links glycolysis and Krebs cycle is

  • 3)

    In Pulses RQ will be

  • 4)

    Succinate dehydrogenase enzyme is found in mitochondrial

  • 5)

    The number of O2 molecules required for breaking down of one molecule of glucose forglycolysis.

11th Standard Bio - Botany - Plant Growth and Development Model Question Paper - by Priya - Dindigul View & Read

  • 1)

    If the diameter of the pulley is 6 inches, length of the pointer is 10 inches and distance travelled by pointer is 5 inches. Calculate the actual growth in length of plant.

  • 2)

    Seed dormancy allows the plants to

  • 3)

    Which hormone is maximum in coconut milk?

  • 4)

    Testing of any chemical substance by using living system is called

  • 5)

    Kurosawa found plants suffering from Bakanae disease. This led to discovery of ................

11th Zoology - Neural Control and Coordination Three Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    Sam's optometrist tells him that his intraocular pressure is high. What is this condition called and which fluid does it involve?

  • 2)

    Pleasant smell of food urged Ravi to rush into the kitchen. Name the parts of the brain involved in the identification of food and emotional responses to odour.

  • 3)

    At the end of repolarization, the nerve membrane gets hyperpolarized. Why?

  • 4)

    Label the parts of the neuron.

  • 5)

    The choroid plexus secretes cerebrospinal fluid. List the function of it.

11th Zoology - Chemical Coordination and Integration Three Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    Hormones are known as chemical messenger. Justify.

  • 2)

    Comment on Acini of thyroid gland

  • 3)

    Write the symptoms of cretinism

  • 4)

    Growth hormone is important for normal growth. Justify the statement.

  • 5)

    Pineal gland is an endocrine gland; write its role

11th Zoology - Trends in Economic Zoology Three Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    Write the advantages of vermicomposting.

  • 2)

    What are the main duties of a worker bee?

  • 3)

    What are the Nutritive values of fishes?

  • 4)

    Give the economic importance of prawn fishery

  • 5)

    Give the economic importance of lac insect

11th Botany - Tissue and Tissue System Three Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    How are meristems classified based on position?

  • 2)

    Draw a diagram of stomata and label the parts.

  • 3)

    What are Casparian strips?

  • 4)

    Write a few sentences about vascular bundle of a Monocot stem.

  • 5)

    Differentiate the features of Monocot and Dicot leaf.

11th Botany - Secondary Growth Three Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    A timber merchant bought 2 logs of wood from a forest & named them A & B, The log A was 50 year old & B was 20 years old. Which log of wood will last longer for the merchant? Why?

  • 2)

    A cross section of tree trunk contains 60 lighter and 60 darker rings. Determine the age of the tree and justify.

  • 3)

    What is amber?

  • 4)

    Write the differences between vascular cambium and cork cambium?

  • 5)

    How are barks classified?

11th Standard Botany - Transport in Plants Three Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    Write the role of pressure potential, turgor: pressure and wall pressure for turgidity of plant: cell.

  • 2)

    Explain the application of exosmosis in food preservation.

  • 3)

    What are the steps involved in phloem loading?

  • 4)

    What is the principle of reverse osmosis?

  • 5)

    Define Osmosis

11th Botany - Mineral Nutrition Three Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    The nitrogen is present in the atmosphere in huge amount but higher plants fail to utilize it. Why?

  • 2)

    Why is that in certain plants deficiency symptoms appear first in younger parts of the plants while in others, they do so in mature organs?

  • 3)

    Explain the insectivorous mode of nutrition in angiosperms?

  • 4)

    List the criteria for essential minerals.

  • 5)

    Give the deficiency symptoms of copper in plants.

11th Botany - Photosynthesis Three Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    Grasses have an adaptive mechanism to compensate photorespiratory losses- Name and describe the mechanism.

  • 2)

    What is the significance of photosynthesis?

  • 3)

    Draw the structure of chloroplast and label two parts.

  • 4)

    How is chlorophyll a synthesized?

  • 5)

    Write a note an Xanthophylls.

11th Botany - Respiration Three Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    What are enzymes involved in phosphorylation and dephosphorylation reactions in EMP pathway?

  • 2)

    What is the significance of RQ?

  • 3)

    What is the aim of Kuhne's experiment?

  • 4)

    What is salt respiration?

  • 5)

    What are the industrial uses of alcoholic fermentation?

11th Botany - Plant Growth and Development Three Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    What is plasticity?

  • 2)

    What is sigmoid curve? Mention their phases

  • 3)

    Write the internal factors for condition of growth.

  • 4)

    Name the plant growth regulators?

  • 5)

    Mention the agricultural role of gibberellic acids?

11th Standard Biology - Bio - Botany - Transport in Plants Model Question Paper - by Priya - Dindigul View & Read

  • 1)

    In a fully turgid cell

  • 2)

    What type of transpiration is possible in the xerophyte Opuntia?

  • 3)

    Stomata of a plant open due to

  • 4)

    Munch hypothesis is based on

  • 5)

    Which of the following physical force is responsibl for ascent of sap?

11th Standard Biology - Bio - Botany - Secondary Growth Model Question Paper - by Priya - Dindigul View & Read

  • 1)

    The common bottle cork is a product of

  • 2)

    What is the fate of primary xylem in a dicot root showing extensive secondary growth?

  • 3)

    The wood formed in spring season in called ____________

  • 4)

    Living part of the wood is called __________

  • 5)

    Gymnosperm wood is known as _______________

11th Standard Zoology - Locomotion and Movement Three Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    How does an isotonic contraction take place?

  • 2)

    Distinguish Red muscle fibres and white muscle fibres.

  • 3)

    Name the regions of the vertebral column and the number of vertebrae present in them

  • 4)

    What are the functions of the vertebral column?

  • 5)

    What are Cartilaginous joints

11th Zoology - Excretion Three Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    Name the three filtration barriers that solutes must come across as they move from plasma to the lumen of Bowman's capsule. What components of the blood are usually excluded by these layers?

  • 2)

    What forces promote glomerular filtration? What forces opposes them? What is meant by net filtration pressure?

  • 3)

    When a molecule or ion is reabsorbed from the lumen of the nephron, where does it go? If a solute is filtered and not reabsorbed from the tubule, where does it go?

  • 4)

    Match each of the following substances. with its mode of transportation in proximal tubular reabsorption.
    (a) Na+               -     Simple diffusion       
    (b) Glucose        -     Primary active transport 
    (c) Urea              -     Indirect active transport
    (d) Plasma          -     Paracellular movement
    (e) Proteins         -     Facilitated diffusion
    (f) Water             -      Endocytosis

  • 5)

    Which segment is the site of secretion and regulated reabsorption of ions and pH homeostasis?

11th Zoology - Body Fluids and Circulation Three Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    Which of these functions could or could not be carried out by a red blood cell? Briefly justify your answer.
    a. Protein synthesis
    b. Cell division
    c. Lipid synthesis
    d. Active transport

  • 2)

    Distinguish between arteries and veins.

  • 3)

    Distinguish between open and closed circulation

  • 4)

    What might be the effect on a person whose diet has less iron content?

  • 5)

    What is lymph? Write its function.

11th Zoology - Respiration Three Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    How the body makes long-term adjustments when living in high altitude.

  • 2)

    Why is pneumonia considered a dangerous disease?

  • 3)

    What are occupational respiratory disorders?

  • 4)

    Draw the human respiration system and label any 4 parts.

  • 5)

    Draw an oxygen dissociation curve.

11th Zoology - Digestion and Absorption Three Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    Bile juice contains no digestive enzymes, yet it is important for digestion. Why?

  • 2)

    List the chemical changes that starch molecule undergoes from the time it reaches the small intestine.

  • 3)

    How do proteins differ from fats in their energy value and their role in the body?

  • 4)

    Digestive secretions are secreted only when needed. Discuss.

  • 5)

    Givea simple test for protein.

11th Zoology - Organ and Organ Systems in Animals Three Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    Write the types of respiration seen in frog.

  • 2)

    Differentiate between peristomium and prostomium in earthworm.

  • 3)

    Give the location of clitellum and spermathecal openings in Lampito mauritii.

  • 4)

    Differentiate between tergum and a sternum.

  • 5)

    Head of cockroach is called hypognathous. Why?

11th Zoology - Tissue Level of Organisation Three Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    Differentiate between elastic fibres and elastic connective tissue.

  • 2)

    Name any four important functions of epithelial tissue and provide at least one example of a tissue that exemplifies each function.

  • 3)

    Explain Gap Junctions.

  • 4)

    What is tissue fluid?

  • 5)

    Distinguish Bone and Cartilage.

11th Zoology - Kingdom Animalia Three Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    Compare Schizocoelom with enterocoelom.

  • 2)

    Concept Mapping - Use the following terms to create a concept map that shows the major characteristic features of the phylum nematode: Roundworms, pseudocoelomates, digestive tract, cuticle, parasite, sexual dimorphism.

  • 3)

    List the characteristic features that distinguish cartilaginous fishes with living jawless fishes.

  • 4)

    What is metagenesis?

  • 5)

    What are comb Jellies or sea walnuts

11th Zoology - Living World Three Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    List any five salient features of the family Felidae.

  • 2)

    What is systematics?

  • 3)

    What are extremophiles?

  • 4)

    What is the Significance of Bhupathy's purple frog?

  • 5)

    Why are sparrows listed as endangered species?

11th Standard Biology - Botany - Tissue and Tissue System Model Question Paper - by Priya - Dindigul View & Read

  • 1)

    In Gymnosperms, the activity of sieve tubes are controlled by

  • 2)

    Grafting is successful in dicots but not in monocots because the dicots have

  • 3)

    Identify the correctly matched pair.

  • 4)

    In a vertical section of a typical dicot leaf, the phloem in the mid-vein is situated

  • 5)

    Ground tissue includes

11th Standard Biology - Zoology - Trends in Economic Zoology Model Question Paper - by Priya - Dindigul View & Read

  • 1)

    Which one of the following is not related to vermiculture?
    (a) Maintains soil fertility
    (b) Breakdown of inorganic matter
    (c) Gives porosity, aeration and moisture holding capacity
    (d) Degradation of non-biodegradable solid waste

  • 2)

    Silk is obtained from ________

  • 3)

    Rearing of honey bee is called

  • 4)

    Prawn belongs to the class

  • 5)

    Choose the correctly matched pair

11th Standard Botany - Taxonomy and Systematic Botany Three Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    What is the role of national gardens in conserving biodiversity? - Discuss.

  • 2)

    What is the need for cladistics?

  • 3)

    Draw the floral diagram and write the floral formula of Clitoria ternatea

  • 4)

    Draw the floral diagram and write the floral formula of Pisum sativum

  • 5)

    Give the systematic position of Solanaceae.

11th Standard Botany - Biomolecules Three Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    What is mRNA?

  • 2)

    Differentiate Prokaryotic mRNA and Eukaryotic mRNA?

  • 3)

    What is Inulin?

  • 4)

    What is Agar?

  • 5)

    Explain Polysaccharide with an example.

11th Standard Botany - Vegetative Morphology Three Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    Differentiate Simple and Compound leaf.

  • 2)

    Draw the regions of the root and label them.

  • 3)

    Draw a leaf and label the parts.

  • 4)

    Differentiate between reticulate venation and parallel venation

  • 5)

    How is pinnately compound leaf different from a palmately compound leaf.

11th Standard Botany - Cell - The Unit of Life Three Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    Distinguish between prokaryotes and eukaryotes.

  • 2)

    What is Glyoxysomes?

  • 3)

    Name the four sites in plant cells where ribosomes are seen.

  • 4)

    List out the function of cell wall

  • 5)

    What is solation and gelation?

11th Standard Botany - Plant Kingdom Three Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    Do you think shape of chloroplast is unique for algae? Justify your answer.

  • 2)

    List out any three Economic importance of algae.

  • 3)

    Describe the Vegetable reproduction of non-vascular cryptogams.

  • 4)

    What are the three types of sexual reproduction occur in algae?

  • 5)

    Describe the structure of pteridophytes.

11th Standard Botany - Reproductive Morphology Three Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    How are simple fruits classified?

  • 2)

    Differentiate Dicot and Monocot seed.

  • 3)

    Mention any three functions of seeds.

  • 4)

    Write a note on Special Inflorescence.

  • 5)

    write a note on Flower sex.

11th Standard Botany - Cell Cycle Three Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    Differentiate between mitosis and meiosis

  • 2)

    Given an account of G0 phase.

  • 3)


    Which is the stage where replication takes place?

  • 4)

    Tabulate the time duration in hours of the different phases of cell cycle

  • 5)

    Explain G1 phase of cell cycle.

11th Botany - Living World Three Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    Briefly discuss on five kingdom classification, Add a note on merits and demerits.

  • 2)

    List out the bacteria used in Dairy industry.

  • 3)

    What is Fimbriae or Pili?

  • 4)

    List out the Animal diseases caused by Bacteria.

  • 5)

    What are Gram-Negative bacteria?

11th Standard Biology - Zoology - Chemical Coordination and Integration Model Question Paper - by Priya - Dindigul View & Read

  • 1)

    The maintenance of constant internal environment is referred as

  • 2)

    Serum calcium level is regulated by

  • 3)

    Which of the following gland is related with immunity?

  • 4)

    Hypersecretion of GH in children leads to

  • 5)

    ADH refers to_________________

11th Standard Biology - Zoology - Neural Control and Coordination Model Question Paper - by Priya - Dindigul View & Read

  • 1)

    Which structure in the ear converts pressure waves to action potentials?

  • 2)

    During synaptic transmission of nerve impulse, the neurotransmitter (P) is released from synaptic vesicles by the action of ions (Q). Choose the correct P and Q.

  • 3)

    Which part of the human brain is concerned with the regulation of body temperature?

  • 4)

    The abundant intracellular cation is

  • 5)

    All of the following are associated with the myelin sheath except

11th Zoology - Excretion Two Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    What is the nitrogenous waste produced by amphibian larvae and by the adult animal?

  • 2)

    Differentiate cortical from medullary nephrons

  • 3)

    What vessels carry blood to the kidneys? Is this blood arterial or venous?

  • 4)

    Which vessels drain filtered blood from the kidneys?

  • 5)

    Name the three main hormones that are involved in the regulation of the renal function?

Class 11th Zoology - Locomotion and Movement Two Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    Name the filaments present in the sarcomere.

  • 2)

    Name the contractile proteins present in the skeletal muscle

  • 3)

    Which is the only jointless bone in human body?

  • 4)

    How is tetany caused?

  • 5)

    How is rigor mortis happened?

Class 11th Zoology - Neural Control and Coordination Two Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    Why is the blind spot called so?

  • 2)

    Why are we getting running nose while crying?

  • 3)

    The action potential occurs in response to a threshold stimulus; but not at subthreshold stimuli. What is the name of the principle involved?

  • 4)

    Cornea transplant in humans is almost never rejected. State the reason.

  • 5)

    Name the meninges.

11th Standard - Zoology - Chemical Coordination and Integration Two Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    Comment on homeostasis.

  • 2)

    Write the role of oestrogen in ovulation.

  • 3)

    Specify the symptoms of acromegaly

  • 4)

    Write the functions of CCK.

  • 5)

    Name the anatomical layers of pituitary gland

11th Standard - Zoology - Trends in Economic Zoology Two Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    Name the three castes in a honey bee colony

  • 2)

    Name the following.
    1. The largest bee in the colony.
    2. The kind of flight which the new virgin queen takes along with the drones out of the hive.

  • 3)

    Name any two trees on which lac insect grows.

  • 4)

    Mention the advantages of MOET.

  • 5)

    Write the peculiar characters of duck.

11th Standard Botany - Tissue and Tissue System Two Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    Why the cells of sclerenchyma and tracheids become dead?

  • 2)

    Give examples of fruits which have sclereids

  • 3)

    What is special about Gnetum.

  • 4)

    What are albuminous cells?

  • 5)

    Explain Bast fibres?

11th Standard Botany - Secondary Growth Two Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    In a forest, if the bark of a tree is damaged by the horn of a deer, How will the plant overcome the damage?

  • 2)

    In which season the vessels of angiosperms are larger in size, why?

  • 3)

    Central part of the wood is always dark. Why?

  • 4)

    Differentiate Porous or Hard wood and Non porous or Soft wood ?

  • 5)

    What are pseudo or false annual rings?

Class 11th Botany - Transport in Plants Two Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    If the concentration of salt in the soil is too high and the plants may wilt even if the field is thoroughly irrigated. Explain

  • 2)

    How phosphorylase enzyme open the stomata in starch sugar interconversion theory?

  • 3)

    List out the non-photosynthetic parts of a plant that needs a supply of sucrose?

  • 4)

    Differentiate channel protein and carrier protein.

  • 5)

    What is facilitated diffusion?

11th Standard Botany - Mineral Nutrition Two Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    Plant A in a nutrient medium shows whiptail disease plant B in a nutrient medium shows a little leaf disease. Identify mineral deficiency of plant A and B?

  • 2)

    Write the role of nitrogenase enzyme in nitrogen fixation? 

  • 3)

    Can the deficiency diseases be transmitted from one plant to another?

  • 4)

    A farmer adds Azotobacter culture to the soil before sowing maize. How does it increase the yield of maize?

  • 5)

    Give examples of Actively mobile minerals

11th Standard Botany - Photosynthesis Two Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    Two groups (A & B) of bean plants of similar size and same leaf area were placed in identical conditions. Group A was exposed to the light of wavelength 400-450nm & Group B to the light of the wavelength of 500- 550nm. Compare the photosynthetic rate of the 2 groups giving reasons.

  • 2)

    A tree is believed to be releasing oxygen during night time. Do you believe the truthfulness of this statement? Justify your answer by giving reasons?

  • 3)

    When there is plenty of light and the higher concentration of O2, what kind of pathway does the plant undergo? Analyse the reasons.

  • 4)

    What is non-oxygenic photosynthesis?

  • 5)

    What are Quantasomes?

11th Botany - Respiration Two Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    Respiratory quotient is zero in succulent plants. Why?

  • 2)

    Which pathway of respiration is common in all living organisms? Where does it occur inside the cell and what are the products?

  • 3)

    Explain the RQ of respiratory substrates in case of anaerobic respiration.

  • 4)

    We find it difficult to breathe at night under a tree? Why?

  • 5)

    How did Blackman classify respiration?

11th Botany - Plant Growth and Development Two Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    What are the parameters used to measure growth of plants?

  • 2)

    Mention the phases of growth in plants?

  • 3)

    Name any two synthetic auxins?

  • 4)

    How does ABA show Antagonistic effect?

  • 5)

    What is a florigen?

11th Zoology - Body Fluids and Circulation Two Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    Distinguish between mitral valve and semi lunar valve.

  • 2)

    Right ventricular wall is thinner than the left ventricular wall Why

  • 3)

    Name the different types of extracellular fluids in our body.

  • 4)

    Name the two opposing pressures which helps in formation of tissue fluid.

  • 5)

    Name the two sources of blood supply to the liver.

11th Zoology - Respiration Two Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    Name the respiratory organs of flatworm, earthworm, fish, prawn, cockroach and cat.

  • 2)

    Name the enzyme that catalyses the bicarbonate formation in RBCs.

  • 3)

    Air moving from the nose to the trachea passes through a number of structures. List in order of the structures.

  • 4)

    Which structure seals the larynx when we swallow?

  • 5)

    Resistance in the airways is typically low. Why? Give two reasons.

11th Zoology - Digestion and Absorption Three Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    Why are villi present in the intestine and not in the stomach?

  • 2)

    What is epiglottis?

  • 3)

    What does GERD stand for? What is it commonly known as?

  • 4)

    What is succus entericus?

  • 5)

    Name the salivary glands.

11th Zoology - Organ and Organ Systems in Animals Two Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    What are earthworm casts?

  • 2)

    Why do you call cockroach a pest?

  • 3)

    Name the visual units of the compound eyes of cockroach.

  • 4)

    What is the significance of prostate glands in earthworm?

  • 5)

    What is direct development?

11th Zoology - Tissue Level of Organisation Two Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    Some epithelia are pseudostratified. What does this mean?

  • 2)

    Differentiate white adipose tissue from brown adipose tissue.

  • 3)

    Why blood is considered as a typical connective tissue?

  • 4)

    Name two auto immune connective tissue disorders.

  • 5)

    How are muscles classified?

11th Standard Biology - Bio - Zoology - Locomotion and Movement Model Question Paper - by Priya - Dindigul View & Read

  • 1)

    Muscles are derived from

  • 2)

    The pigment present in the muscle fibre to store oxygen is

  • 3)

    The region between two successive Z-discs is called a

  • 4)

    Inflammation of [oiqts due to accumulation of uric acid crystals is called as

  • 5)

    The pointed portion of the elbow is

11th Zoology - Kingdom Animalia Two Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    What are the four characteristics common to most animals

  • 2)

    Compare closed and open circulatory system.

  • 3)

    Choose the term that does not belong in the following group and explain why it does not belong? Notochord, cephalisation, dorsal nerve cord and radial symmetry.

  • 4)

    What are flame cells?

  • 5)

    What is Pseudocoel?

11th Zoology - Living World Two Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    Differentiate between probiotics and pathogenic bacteria

  • 2)

    Why mule is sterile in nature?

  • 3)

    What is biodiversity?

  • 4)

    Define Taxonomy.

  • 5)

    How did Aristotle classify animals?

11th Biology - Bio - Zoology - Excretion Model Question Paper - by Priya - Dindigul View & Read

  • 1)

    Concentration of urine depends upon which part of the nephron

  • 2)

    The end product of Ornithine cycle is

  • 3)

    Podocytes are the cells present on the

  • 4)

    Kidney stones are produced due to deposition of uric acid and

  • 5)

    Malpighian tubules remove excretory products from

11th Botany - Biomolecules Two Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    Given below is the diagrammatic representation of one of the categories of small molecular weight organic compounds in the living tissues. Identify the category shown & one blank component" X" in it.

    CATEGORY COMPOUND
    Cholesterol Guanine
    Amino acid NH2
    Nucleotide Adenine
    Nucleoside Uracil
  • 2)

    Distinguish between nitrogenous base and a base found in inorganic chemistry.

  • 3)

    What is a prosthetic group?

  • 4)

    What is meant by activation energy?

  • 5)

    Distinguish between Reducing sugars and Nonreducing sugars.

11th Botany - Cell Cycle Two Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    Write any three significance of mitosis.

  • 2)

    Who coined the word "Cell" and "protoplasm"?

  • 3)

    Mentions any two roles of nucleus.

  • 4)

    Define the term haploid.

  • 5)

    Define the term Cytokinesis

11th Standard Botany - Cell - The Unit of Life Two Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    Bring out the significance of phase contrast microscopy.

  • 2)

    State the protoplasm theory.

  • 3)

    What is a Telomere?

  • 4)

    What is Holocentric Chromosomes?

  • 5)

    What are nucleolar organisers?

11th Botany - Taxonomy and Systematic Botany Two Marks Questions - by Banu - Tiruvallur View & Read

  • 1)

    Where will you place the plants which contain two cotyledons with cup shaped thalamus?

  • 2)

    Define Taxonomy.

  • 3)

    What is ICBN?

  • 4)

    What is the other name for serotaxonomy?

  • 5)

    Name the different molecular markers used in Molecular taxonomy.

11th Biology - Term 1 Model Question Paper - by Priya - Dindigul View & Read

  • 1)

    Which of following represent generation in pteridophytes?

  • 2)

    Example for negatively geotropic roots

  • 3)

    Gynoecium with united carpels is termed as

  • 4)

    Flowers are zygomorphic in

  • 5)

    The correct sequence in cell cycle is

11th Botany - Reproductive Morphology Two Marks Question - by Banu - Tiruvallur View & Read

  • 1)

    Find out the floral formula for a bisexual flower with bract, regular, pentamerous, distinct calyx and corolla, superior ovary without bracteole.

  • 2)

    Give the technical terms for the following:
    (a) A sterile stamen
    (b) Stamens are united in one bunch
    (c) Stamens are attached to the petals

  • 3)

    What is Coenanthium?

  • 4)

    What is dehiscence?

  • 5)

    What is a bisexual flower?

11th Standard Botany - Vegetative Morphology Two Marks Question - by Banu - Tiruvallur View & Read

  • 1)

    How root climbers differ from stem climber?

  • 2)

    Compare sympodial branching with monopodial branching.

  • 3)

    What is primary root?

  • 4)

    Define Root cap.

  • 5)

    Name the various regions of the root.

11th Standard Botany - Plant Kingdom Two Marks Question - by Banu - Tiruvallur View & Read

  • 1)

    What is plectostele? Give example.

  • 2)

    What do you infer from the term pycnoxylic?

  • 3)

    Mention two characters shared by gymnosperms and angiosperms?

  • 4)

    Name the methods of asexual reproduction seen in algae.

  • 5)

    Name a foliaceous alga and colonial non motile alga.

11th Standard Botany - Living World Two Marks Question - by Banu - Tiruvallur View & Read

  • 1)

    Differentiate Homoiomerous and Heteromerous lichens.

  • 2)

    Write the distinguishing features of Monera.

  • 3)

    Why do farmers plant leguminous crops in crop rotations/mixed cropping?

  • 4)

    What is Homeostasis?

  • 5)

    How was the word virus derived?

11th Biology - Term 1 Five Mark Model Question Paper - by Banu - Tiruvallur View & Read

  • 1)

    Give a general account on lichens.

  • 2)

    Explain the different types of fleshy fruit with suitable example.

  • 3)

    Difference between plant and animal cell.

  • 4)

    Write about Pachytene and Diplotene of Prophase I.

  • 5)

    Write the characteristic features of DNA.

11th Biology Quarterly Model Question Paper - by Banu - Tiruvallur View & Read

  • 1)

    Which one of the following statement about virus is correct?

  • 2)

    Identify the incorrect statement about the Gram positive bacteria

  • 3)

    ___________ are considered as pollution indicators.

  • 4)

    A multicellular organism grows by ____________

  • 5)

    ______________ is a basic unit of life.

11th Standard Botany - Plant Growth and Development Book Back Questions - by Banu - Tiruvallur View & Read

  • 1)

    Select the wrong statement from the following:

  • 2)

    If the diameter of the pulley is 6 inches, length of the pointer is 10 inches and distance travelled by pointer is 5 inches. Calculate the actual growth in length of plant.

  • 3)

    In unisexual plants, sex can be changed by the application of

  • 4)

    Select the correctly matched one

    A) Human urine i) Auxin –B
    B) Corn gram oil ii) GA3
    C) Fungus iii) Abscisic acid II
    D) Herring fish sperm iv) Kinitin
    E) Unripe maize grains v) Auxin A
    F) Young cotton bolls vi) Zeatin
  • 5)

    Seed dormancy allows the plants to

11th Botany - Respiration Book Back Questions - by Banu - Tiruvallur View & Read

  • 1)

    Respiratory quotient is zero in succulent plants. Why?

  • 2)

    What are enzymes involved in phosphorylation and dephosphorylation reactions in EMP pathway?

  • 3)

    Explain the reactions taking place in the mitochondrial inner membrane.

  • 4)

    How will you calculate net products of one sucrose molecule upon complete oxidation during aerobic respiration as per recent view?

11th Botany - Photosynthesis Book Back Questions - by Banu - Tiruvallur View & Read

  • 1)

    Assertion (A): Increase in Proton gradient inside lumen responsible for ATP synthesis
    Reason (R): Oxygen-evolving complex of PS I located on thylakoid membrane facing Stroma, releases H+ ions

  • 2)

    The correct sequence of flow of electrons in the light reaction is

  • 3)

    Identify true statement regarding the light reaction of photosynthesis?

  • 4)

    Two groups (A & B) of bean plants of similar size and same leaf area were placed in identical conditions. Group A was exposed to the light of wavelength 400-450nm & Group B to the light of the wavelength of 500- 550nm. Compare the photosynthetic rate of the 2 groups giving reasons.

  • 5)

    When there is plenty of light and the higher concentration of O2, what kind of pathway does the plant undergo? Analyse the reasons.

11th Botany - Mineral Nutrition Book Back Questions - by Banu - Tiruvallur View & Read

  • 1)

    The element which is not remobilized?

  • 2)

    Identify the correct statement
    i. Sulphur is essential for amino acids Cystine and Methionine. 
    ii. Low level of N, K, S and Mo affect the cell division. 
    iii. Non-leguminous plant Alnuswhich contain bacterium Frankia. 
    iv. Denitrification carried out by nitrosomonas and nitrobacter.

  • 3)

    Write the role of nitrogenase enzyme in nitrogen fixation? 

  • 4)

    The nitrogen is present in the atmosphere in huge amount but higher plants fail to utilize it. Why?

  • 5)

    Explain the insectivorous mode of nutrition in angiosperms?

11th Botany - Transport in Plants Book Back Questions - by Banu - Tiruvallur View & Read

  • 1)

    Munch hypothesis is based on

  • 2)

    How phosphorylase enzyme open the stomata in starch sugar interconversion theory?

  • 3)

    List out the non-photosynthetic parts of a plant that needs a supply of sucrose?

  • 4)

    What are the parameters which control water potential?

  • 5)

    An artificial cell made of selectively permeable membrane immersed in a beaker (in the figure). Read the values and answer the following questions?

    a. Draw an arrow to indicate the direction of water movement.
    b. Is the solution outside the cell isotonic, hypotonic or hypertonic?
    c. Is the cell isotonic, hypotonic or hypertonic?
    d. Will the cell become more flaccid, more turgid or stay in original size?
    e. With reference to artificial cell state, the process is endosmosis or exosmosis? Give reasons

11th Botany - Secondary Growth Book Back Questions - by Banu - Tiruvallur View & Read

  • 1)

    Usually, the monocotyledons do not increase their girth, because

  • 2)

    The common bottle cork is a product of

  • 3)

    What is the fate of primary xylem in a dicot root showing extensive secondary growth?

  • 4)

    In which season the vessels of angiosperms are larger in size, why?

  • 5)

    A transverse section of the trunk of a tree shows concentric rings which are known as growth rings. How are these rings formed? What is the significance of these rings?

11th Standard Botany - Tissue and Tissue System Book Back Questions - by Banu - Tiruvallur View & Read

  • 1)

    In Gymnosperms, the activity of sieve tubes are controlled by

  • 2)

    When a leaf trace extends from a vascular bundle in a dicot stem, what would be the arrangement of vascular tissues in the veins of the leaf?

  • 3)

    Grafting is successful in dicots but not in monocots because the dicots have

  • 4)

    Why the cells of sclerenchyma and tracheids become dead?

  • 5)

    What are sieve tubes ?explain.

11th Standard Zoology - Trends in Economic Zoology Book Back Questions - by Banu - Tiruvallur View & Read

  • 1)

    Silk is obtained from ________

  • 2)

    Rearing of honey bee is called

  • 3)

    Prawn belongs to the class

  • 4)

    Inland fisheries are

  • 5)

    Choose the correctly matched pair

11th Standard Zoology - Chemical Coordination and Integration Book Back Questions - by Banu - Tiruvallur View & Read

  • 1)

    The maintenance of constant internal environment is referred as

  • 2)

    Which of the following gland is related with immunity?

  • 3)

    Hypersecretion of GH in children leads to

  • 4)

    Which one of the following statement is correct

  • 5)

    Comment on homeostasis.

11th Standard Zoology - Neural Control and Coordination Book Back Questions - by Banu - Tiruvallur View & Read

  • 1)

    Which structure in the ear converts pressure waves to action potentials?

  • 2)

    During synaptic transmission of nerve impulse, the neurotransmitter (P) is released from synaptic vesicles by the action of ions (Q). Choose the correct P and Q.

  • 3)

    Assertion: The imbalance in concentration of Na+, K+ and proteins generates action potential.
    Reason: To maintain the unequal distribution of Na+ and K+, the neurons use electrical energy.

  • 4)

    Which of the following statement concerning the somatic division of the peripheral neural system is incorrect?

  • 5)

    Why is the blind spot called so?

11th Zoology - Locomotion and Movement Book Back Questions - by Banu - Tiruvallur View & Read

  • 1)

    Muscles are derived from

  • 2)

    The pigment present in the muscle fibre to store oxygen is

  • 3)

    The protein present in the thick filament is

  • 4)

    ATPase enzyme needed for muscle contraction is located in

  • 5)

    The pointed portion of the elbow is

11th Standard Zoology - Excretion Book Back Questions - by Banu - Tiruvallur View & Read

  • 1)

    Concentration of urine depends upon which part of the nephron

  • 2)

    The end product of Ornithine cycle is

  • 3)

    Kidney stones are produced due to deposition of uric acid and

  • 4)

    Malpighian tubules remove excretory products from

  • 5)

    Differentiate cortical from medullary nephrons

TN 11th Standard Biology Official Model Question Paper 2019 - 2020 - by Banu - Tiruvallur View & Read

11th Standard Zoology - Body Fluids and Circulation Book Back Questions - by Banu - Tiruvallur View & Read

  • 1)

    What is the function of lymph?

  • 2)

    Which one of the following plasma proteins is involved in the coagulation of blood?

  • 3)

    Which of the following WBCs are found in more numbers

  • 4)

    Blood group is due to the presence or absence of surface

  • 5)

    A person having both 'antigen A and antigen B on the surface of RBCs belongs to blood group

11th Standard Zoology - Respiration Book Back Questions - by Banu - Tiruvallur View & Read

  • 1)

    Breathing is controlled by

  • 2)

    The respiratory structures of insects are

  • 3)

    The Oxygen Dissociation Curve is

  • 4)

    During inspiration, the diaphragm

  • 5)

    CO2 is transported through blood to lungs as

11th Standard Zoology - Digestion and Absorption Book Back Questions - by Banu - Tiruvallur View & Read

  • 1)

    Choose the incorrect sentence from the following:

  • 2)

    What is chyme__________ ?

  • 3)

    Which of the following hormones stimulate the production of pancreatic juice and bicarbonate?

  • 4)

    Which one is incorrectly matched?

  • 5)

    Absorption of glycerol, fatty acids and monoglycerides takes place by

11th Standard Zoology - Organ and Organ Systems in Animals Book Back Questions - by Banu - Tiruvallur View & Read

  • 1)

    The clitellum is a distinct part in the body of earthworm Lampito mauritii, it is found in?

  • 2)

    The type of vision in Cockroach is ______________

  • 3)

    Buccopharyngeal respiration in frog

  • 4)

    Choose the wrong statement among the following

  • 5)

    Which of the following are the sense organs of Cockroach?

11th Standard Botany - Biomolecules Book Back Questions - by Banu - Tiruvallur View & Read

  • 1)

    The most basic amino acid is

  • 2)

    An example of feedback inhibition is

  • 3)

    Enzymes that catalyse interconversion of optical, geometrical or positional isomers are

  • 4)

    Proteins perform many physiological functions. For example some functions as enzymes. One of the following represents an additional function that some proteins discharge:

  • 5)

    Given below is the diagrammatic representation of one of the categories of small molecular weight organic compounds in the living tissues. Identify the category shown & one blank component" X" in it.

    CATEGORY COMPOUND
    Cholesterol Guanine
    Amino acid NH2
    Nucleotide Adenine
    Nucleoside Uracil

11th Botany - Taxonomy and Systematic Botany Book Back Questions - by Banu - Tiruvallur View & Read

  • 1)

    Specimen derived from non-original collection serves as the nomenclatural type, when original specimen is missing. It is known as

  • 2)

    Phylogenetic classification is the most favoured classification because it reflects

  • 3)

    The taxonomy which involves the similarities and dissimilarities among the immune system of different taxa is termed as

  • 4)

    Which of the following is a flowering plant with nodules containing filamentous nitrogen fixing micro-organisms?

  • 5)

    Flowers are zygomorphic in

11th Standard Botany - Cell - The Unit of Life Book Back Questions - by Banu - Tiruvallur View & Read

  • 1)

    The two subunits of ribosomes remain united at critical ion level of

  • 2)

    Sequences of which of the following is used to know the phylogeny

  • 3)

    Many cells function properly and divide mitotically even though they do not have

  • 4)

    Keeping in view the fluid mosaic model for the structure of cell membrane, which one of the following statements is correct with respect to the movement of lipid and proteins from one lipid monolayer to the other

  • 5)

    Match the columns and identify the correct option:

      Column I   Column II
    A Thylakoids 1. Disc-shaped sacs in Golgi apparatus
    B. Cristae 2. Condensed structure of DNA
    C. Cisternae 3. Flat membranous sacs in stroma
    D Chromatin 4. Infoldings in mitochondria

11th Standard Botany - Cell Cycle Book Back Questions - by Banu - Tiruvallur View & Read

  • 1)

    The correct sequence in cell cycle is

  • 2)

    If mitotic division is restricted in G1 phase of the cell cycle then the condition is known as

  • 3)

    Anaphase promoting complex APC is a protein degradation machinery necessary for proper mitosis of animal cells. If APC is defective in human cell, which of the following is expected to occur?

  • 4)

    In S phase of the cell cycle

  • 5)

    Centromere is required for

11th Standard Botany - Reproductive Morphology Book Back Questions - by Banu - Tiruvallur View & Read

  • 1)

    Vexillary aestivation is characteristic of the family

  • 2)

    Gynoecium with united carpels is termed as

  • 3)

    Aggregate fruit develops from

  • 4)

    In an inflorescence where flowers are borne laterally in an acropetal succession the position of the youngest floral bud shall be

  • 5)

    A true fruit is the one where

11th Standard Zoology - Tissue Level of Organisation Book Back Questions - by Banu - Tiruvallur View & Read

  • 1)

    The main function of the cuboidal epithelium is

  • 2)

    The ciliated epithelium lines the

  • 3)

    What type of fibres found in connective tissue matrix?

  • 4)

    Prevention of substances from leaking across the tissue is provided by

  • 5)

    Non-shivering thermogenesis in neonates produces heat through

11th Standard Botany - Vegetative Morphology Book Back Questions - by Banu - Tiruvallur View & Read

  • 1)

    Roots are

  • 2)

    When the root is thick and fleshy, but, does not taken a definite shape, it said to be

  • 3)

    Example for negatively geotropic roots

  • 4)

    Curcuma amada, Curcuma domestica, Asparagus, Maranta are example of

  • 5)

    Bryophyllum and Dioscorea are example for

11th Standard Zoology - Kingdom Animalia Book Back Questions - by Banu - Tiruvallur View & Read

  • 1)

    The symmetry exhibited in cnidarians is

  • 2)

    The excretory cells that are found in platyhelminthes are

  • 3)

    Metameric segmentation is the main feature of

  • 4)

    In Pheretima locomotion occurs with help of

  • 5)

    Which of the following have the highest number of species in nature?

11th Standard Botany - Plant Kingdom Book Back Questions - by Banu - Tiruvallur View & Read

  • 1)

    Which of the plant group has gametophyte as a dominant phase?

  • 2)

    Which of following represent generation in pteridophytes?

  • 3)

    The haploid number of chromosome for an Angiosperm is 14, the number of chromosome in its endosperm would be

  • 4)

    Endosperm in Gymnosperm is formed

  • 5)

    Differentiate halpontic and diplontic life cycle.

11th Standard Zoology - Living World Book Back Questions - by Banu - Tiruvallur View & Read

  • 1)

    A living organism is differentiated from non- living structure based on

  • 2)

    A group of organisms having similar traits of a rank is

  • 3)

    Every unit of classification regardless of its rank is

  • 4)

    Which of the following is not present on same rank?

  • 5)

    Which taxonomic aid gives comprehensive information about a taxon?

11th Standard Botany - Living World Book Back Questions - by Banu - Tiruvallur View & Read

  • 1)

    Which one of the following statement about virus is correct?

  • 2)

    Identify the incorrect statement about the Gram positive bacteria

  • 3)

    Identify the Archaebacterium

  • 4)

    The correct statement regarding Blue green algae is

  • 5)

    Identify the correctly matched pair

11th Standard Zoology - Kingdom Animalia One Mark Question with Answer Key - by Banu - Tiruvallur View & Read

  • 1)

    The symmetry exhibited in cnidarians is

  • 2)

    Sea anemone belongs to phylum

  • 3)

    The excretory cells that are found in platyhelminthes are

  • 4)

    Parenchymula is the larval stage of Phylum _______________

  • 5)

    Identify the feature that is unique to planaria

11th Standard Zoology - Living World One Mark Question and Answer - by Banu - Tiruvallur View & Read

  • 1)

    A living organism is differentiated from non- living structure based on

  • 2)

    A group of organisms having similar traits of a rank is

  • 3)

    Every unit of classification regardless of its rank is

  • 4)

    Choose the odd one out.

  • 5)

    Book written by Darwin_____________

11th Standard Botany - Cell Cycle One Mark Question and Answer - by Banu - Tiruvallur View & Read

  • 1)

    The correct sequence in cell cycle is

  • 2)

    If mitotic division is restricted in G1 phase of the cell cycle then the condition is known as

  • 3)

    Synapsis occur between

  • 4)

    In meiosis crossing over is initiated at

  • 5)

    Colchicine prevents the mitosis of the cells at which of the following stage

11th Botany - Cell - The Unit of Life One Mark Questions with Answer Key - by Banu - Tiruvallur View & Read

  • 1)

    The two subunits of ribosomes remain united at critical ion level of

  • 2)

    Sequences of which of the following is used to know the phylogeny

  • 3)

    Keeping in view the fluid mosaic model for the structure of cell membrane, which one of the following statements is correct with respect to the movement of lipid and proteins from one lipid monolayer to the other

  • 4)

    The term animalcules was used by______.

  • 5)

    A patch stop carrier is a part of_______

11th Botany - Taxonomy and Systematic Botany One Mark Question with Answer - by Banu - Tiruvallur View & Read

  • 1)

    Specimen derived from non-original collection serves as the nomenclatural type, when original specimen is missing. It is known as

  • 2)

    Phylogenetic classification is the most favoured classification because it reflects

  • 3)

    Which of the following is a flowering plant with nodules containing filamentous nitrogen fixing micro-organisms?

  • 4)

    Flowers are zygomorphic in

  • 5)

    ...................... was the first to use the term 'Systematics'.

11th Standard Botany - Reproductive Morphology One Mark Question and Answer - by Banu - Tiruvallur View & Read

  • 1)

    Vexillary aestivation is characteristic of the family

  • 2)

    A true fruit is the one where

  • 3)

    Specialised inflorescence is seen in __________

  • 4)

    Cymule means __________

  • 5)

    _______ is called 'Raceme of cymes.'

11th Botany - Vegetative Morphology One Mark Question with Answer - by Banu - Tiruvallur View & Read

  • 1)

    Roots are

  • 2)

    Example for negatively geotropic roots

  • 3)

    Bryophyllum and Dioscorea are example for

  • 4)

    The growing tip of the root _____.

  • 5)

    _____ is a biennial.

11th Botany - Plant Kingdom One Mark Question Paper - by Banu - Tiruvallur View & Read

  • 1)

    Which of the plant group has gametophyte as a dominant phase?

  • 2)

    Which of following represent generation in pteridophytes?

  • 3)

    The haploid number of chromosome for an Angiosperm is 14, the number of chromosome in its endosperm would be

  • 4)

    Endosperm in Gymnosperm is formed

  • 5)

    __ is a alga found on shell of molluscs.

11th Botany - Living World One Mark Question Paper - by Banu - Tiruvallur View & Read

  • 1)

    Which one of the following statement about virus is correct?

  • 2)

    Identify the Archaebacterium

  • 3)

    Identify the correctly matched pair

  • 4)

    Basidiomycetes do not possess this feature.

  • 5)

    A plant growth promoter got from fungi is ___________

11th Zoology - Living World Model Question Paper - by Banu - Tiruvallur View & Read

  • 1)

    A living organism is differentiated from non- living structure based on

  • 2)

    Cladogram considers the following characters

  • 3)

    Three domain classification was proposed by_______________

  • 4)

    Choose the odd one out.

  • 5)

    Book written by Darwin_____________

11th Botany - Cell - The Unit of Life Model Question Paper - by Banu - Tiruvallur View & Read

  • 1)

    The two subunits of ribosomes remain united at critical ion level of

  • 2)

    Keeping in view the fluid mosaic model for the structure of cell membrane, which one of the following statements is correct with respect to the movement of lipid and proteins from one lipid monolayer to the other

  • 3)

    _________ provides 3 dimensional images of surface of microscopic objects.

  • 4)

    The term protoplasm was coined by______.

  • 5)

    Janus Green is used to stain____

11th Botany - Taxonomy and Systematic Botany Model Question Paper - by Banu - Tiruvallur View & Read

  • 1)

    Specimen derived from non-original collection serves as the nomenclatural type, when original specimen is missing. It is known as

  • 2)

    The taxonomy which involves the similarities and dissimilarities among the immune system of different taxa is termed as

  • 3)

    Flowers are zygomorphic in

  • 4)

    ...................... was the first to use the term 'Systematics'.

  • 5)

    19th International Botanical Congress was held in .............

11th Standard Biology First Mid Term Model Question Paper - by Banu - Tiruvallur View & Read

  • 1)

    Which one of the following statement about virus is correct?

  • 2)

    ______________ is a thermophilic gram negative bacteria.

  • 3)

    Life on earth exists within a complex structure called_________.

  • 4)

    Five kingdom system of classification suggested by R.H. Whittaker is not based on

  • 5)

    Actinomycetes comes under _________ kindgom.

11th Standard Botany - Reproductive Morphology Model Question Paper - by Banu - Tiruvallur View & Read

  • 1)

    Vexillary aestivation is characteristic of the family

  • 2)

    Aggregate fruit develops from

  • 3)

    A true fruit is the one where

  • 4)

    Specialised inflorescence is seen in __________

  • 5)

    Cymule means __________

11th Standard Botany - Vegetative Morphology Important Question Paper - by Banu - Tiruvallur View & Read

  • 1)

    Roots are

  • 2)

    Bryophyllum and Dioscorea are example for

  • 3)

    _____ is a biennial.

  • 4)

    _____ is an example for Lianas.

  • 5)

    Ternate phyllotaxy is seen in _____

+1 Standard Botany Plant Kingdom Important Question Paper - by Banu - Tiruvallur View & Read

  • 1)

    Which of the plant group has gametophyte as a dominant phase?

  • 2)

    Which of following represent generation in pteridophytes?

  • 3)

    The haploid number of chromosome for an Angiosperm is 14, the number of chromosome in its endosperm would be

  • 4)

    __ is a alga found on shell of molluscs.

  • 5)

    ______is a halophytic alga.

11th Biology - Unit 1 - Living World Important Question - by Banu - Tiruvallur View & Read

  • 1)

    Which one of the following statement about virus is correct?

  • 2)

    Identify the incorrect statement about the Gram positive bacteria

  • 3)

    Basidiomycetes do not possess this feature.

  • 4)

    A plant growth promoter got from fungi is ___________

  • 5)

    Monotropa derives nutrition by ___________

11th Standard Biology Public Exam March 2019 Important Creative 3 Mark Questions and Answers - by Gowtham View & Read

  • 1)

    Mention the potential applications of fungi in agriculture.

  • 2)

    What are the three main symmetry of viruses?

  • 3)

    What is Viroid? Who discovered it?

  • 4)

    Draw a T4 bacteriophage and label the parts.

  • 5)

    Mention the economic importance of lichens.

11th Standard Biology Public Exam March 2019 Important Creative One Mark Test 1 - by Gowtham View & Read

  • 1)

    Which one of the following statement about virus is correct?

  • 2)

    The correct statement regarding Blue green algae is

  • 3)

    The base plate of T4 phage has ______________ tail fibres.

  • 4)

    Study of fungus is called as __________ .

  • 5)

    Which of the plant group has gametophyte as a dominant phase?

Plus One Biology Public Exam March 2019 One Mark Question Paper - by Gowtham View & Read

  • 1)

    Identify the incorrect statement about the Gram positive bacteria

  • 2)

    Identify the Archaebacterium

  • 3)

    Lichen which grown on rock is ________.

  • 4)

    Mycobacterium is a ___________ .

  • 5)

    Which of the plant group has gametophyte as a dominant phase?

11th Standard Biology Public Exam March 2019 Important One Mark Questions - by Gowtham View & Read

  • 1)

    Which one of the following statement about virus is correct?

  • 2)

    The correct statement regarding Blue green algae is

  • 3)

    Mycoplasma is very small and its ranges from __________.

  • 4)

    Lichen which grow on wood is called _________.

  • 5)

    Which of following represent generation in pteridophytes?

11th Standard Biology Public Exam March 2019 Important Creative Questions and Answers - by Gowtham View & Read

  • 1)

    Differentiate Homoiomerous and Heteromerous lichens.

  • 2)

    Write the distinguishing features of Monera.

  • 3)

    What is Homeostasis?

  • 4)

    What are coprophilic Fungi?

  • 5)

    Define Anabolism.

11th Standard Biology Public Exam March 2019 Important 5 Marks Questions - by Gowtham View & Read

  • 1)

    Give a general account on lichens.

  • 2)

    Describe the structure of Tobacco Mosaic Virus.

  • 3)

    What are Mycorrhizae? Explain the types.

  • 4)

    Describe the structure of Gram positive and Gram negative bacterial cell wall using diagram.

  • 5)

    List out the Economic importance of Gymnosperms.

Plus One Biology Public Exam March Model Question Paper and Answers 2019 - by Gowtham View & Read

  • 1)

    The genome of viroid is ______ .

  • 2)

    Curcuma amada, Curcuma domestica, Asparagus, Maranta are example of

  • 3)

    Imperfect flowers will have __________ essential whorl(s).

  • 4)

    The term_____________________was introduced by Waldeyerin 1888.

  • 5)

    A living organism is differentiated from non- living structure based on

11th Standard Biology Public Exam Official Question Paper 2019 - by Gowtham View & Read

  • 1)

    Vaccination for small pox was discovered by ________________

  • 2)

    Example for negatively geotropic roots

  • 3)

    Single seeded dry fruit developing from single carpel with superior ovary ______________.

  • 4)

    ______________________images of structures observed through microscopes can be further magnified.

  • 5)

    Cladogram considers the following characters

11th Standard Biology Plant Kingdom Important Questions - by Gowtham View & Read

  • 1)

    Which of following represent generation in pteridophytes?

  • 2)

    Endosperm in Gymnosperm is formed

  • 3)

    Scalariform conjugation is seen in ________

  • 4)

    _________is a green alga employed in Biofuel production.

  • 5)

    Which one of the following is belongs to the members of phaeophyceae? (or) The members of phaeophyceae are commonly called ____

11th Standard Biology Third Revision Test Question Paper 2019 - by Gowtham View & Read

  • 1)

    How many organisms in the list below are autotrophs?
    » Lactobacillus, Nostoc, Chara, Nitrosomonas, Nitrobacter, Streptomyces, Saccharomyces,
    » Trypanosoma, Porphyra, Wolffia.

  • 2)

    Example for negatively geotropic roots

  • 3)

    Arrangement of sepals and petals in flower bud is called ________.

  • 4)

    Lysosomes release theirenzymes outer side the cell to digestother cells _________________

  • 5)

    Who coined the term biodiversity

11th Standard Biology Public Model Exam 2019 - by Gowtham View & Read

  • 1)

    The T4 Phage is ________ shaped,

  • 2)

    Bryophyllum and Dioscorea are example for

  • 3)

    Inflorescence developed directly from a woody trunk_____________.

  • 4)

    Phase plate is a circular component with circular annular etching in___________________________

  • 5)

    Cladogram considers the following characters

11th Standard Biology Second Revision Test 2019 - by Gowtham View & Read

  • 1)

    The term "Bacteriophage" is coined by ____________.

  • 2)

    When the root is thick and fleshy, but, does not taken a definite shape, it said to be

  • 3)

    Fused tepaIs are called ______________.

  • 4)

    Which organelle is associated in the formation of basal granules, cillia and flagella?

  • 5)

    A living organism is differentiated from non- living structure based on

11th Stateboard Biology Vegetative Morphology Important Questions - by Gowtham View & Read

  • 1)

    Roots are

  • 2)

    In Nymphaea the stem is a

  • 3)

    The stem is modified to cladode and leaves are modified as scales in ____

  • 4)

    Root that grow from any part of the plant body other than the radicle are called _____

  • 5)

    Stilt roots are seen in _____

11th Standard Biology Half Yearly Exam 2018 - by Gowtham View & Read

11th Biology Half Yearly Model Question Paper and Answer - by Gowtham View & Read

  • 1)

    Food poisoning is caused by ______________

  • 2)

    Example for negatively geotropic roots

  • 3)

    Tubular corolla with a single strap-shaped limb ________________.

  • 4)

    __________________ribosomes are present in the outer surface of the endoplasmic reticulum.

  • 5)

    A living organism is differentiated from non- living structure based on

HSC First year Biology Important Question Paper and Answer - by Gowtham View & Read

  • 1)

    ___________ sps is an endophyte in coralloid roots of Cycas.

  • 2)

    Bryophyllum and Dioscorea are example for

  • 3)

    Match the following

    A)Samara i)Strawberry
    B)Utricle ii)Acer
    C)Cremocarp iii)Abutilon
    D)Carcerulus iv)Helianthus
    E)Achene v)Chenopodium
    F)Cypsela vi)Carrot
  • 4)

    The carbohydrate molecules of cell membrane are:

  • 5)

    Every unit of classification regardless of its rank is

11th Standard Biology Biomolecules Important Questions - by Gowtham View & Read

  • 1)

    The most basic amino acid is

  • 2)

    Proteins perform many physiological functions. For example some functions as enzymes. One of the following represents an additional function that some proteins discharge:

  • 3)

    Sanger first sequenced the protein called ____________.

  • 4)

    Which one of the following pairs is correctly matched?

  • 5)

    Which of the following is not a disaccharide?

Living World Important Questions from 12th Biology - by Gowtham View & Read

  • 1)

    Which one of the following statement about virus is correct?

  • 2)

    Identify the correctly matched pair

  • 3)

    Monotropa derives nutrition by ___________

  • 4)

    Living things are made of ___________

  • 5)

    ______________ is a basic unit of life.

11th Biology 5 Marks Revision Test - by Gowtham View & Read

  • 1)

    Give a general account on lichens.

  • 2)

    Write the similarities and differences between
    (i) Avicennia and Trapa.
    (ii) Banyan and Silk cotton.
    (iii) Fusiform and Napiform root.

  • 3)

    Give the floral characters of Clitoria ternatea.

  • 4)

    Draw the ultra structure of plant cell

  • 5)

    Write about Pachytene and Diplotene of Prophase I.

11th Biology Model Exam Question paper - by Gowtham View & Read

  • 1)

    Identify the Archaebacterium

  • 2)

    The haploid number of chromosome for an Angiosperm is 14, the number of chromosome in its endosperm would be

  • 3)

    Curcuma amada, Curcuma domestica, Asparagus, Maranta are example of

  • 4)

    In an inflorescence where flowers are borne laterally in an acropetal succession the position of the youngest floral bud shall be

  • 5)

    The taxonomy which involves the similarities and dissimilarities among the immune system of different taxa is termed as

11th Biology Half Yearly Model Question Paper 1 - by Gowtham View & Read

  • 1)

    The correct statement regarding Blue green algae is

  • 2)

    Read the following statements. ( A to E ) and select the option with all correct statements.
    A) Mosses and Lichens are the first organisms to colonise a bare rock.
    B) Selaginella is a homosporous pteridophyte.
    C) Coralloid roots in Cycas have VAM.
    D) Main plant body in bryophytes is gametophytic, whereas in pteridophytes it is sporophytic.
    E) In gymnosperms, male and female gametophytes are present within sporangia located on sporophyte.

  • 3)

    Bryophyllum and Dioscorea are example for

  • 4)

    Aggregate fruit develops from

  • 5)

    The taxonomy which involves the similarities and dissimilarities among the immune system of different taxa is termed as

11th Standard Biology Important Question Paper - by Periyar Matric Higher Secondary School View & Read

  • 1)

    Read the following sentences and identify the correctly matched sentences.
    i. In exarch condition, the protoxylem lies outside of metaxylem.
    ii. In endarch condition, the protoxylem lie towords the centre.
    iii. In centarch condition, metaxylem lies in the middle of the protoxylem.
    iv. In mesarch condition, protoxylem lies in the middle of the metaxylem.

  • 2)

    When a leaf trace extends from a vascular bundle in a dicot stem, what would be the arrangement of vascular tissues in the veins of the leaf?

  • 3)

    The common bottle cork is a product of

  • 4)

    What is the fate of primary xylem in a dicot root showing extensive secondary growth?

  • 5)

    In a fully turgid cell

11th Standard Biology Unit- 8 Important Questions - by Periyar Matric Higher Secondary School View & Read

  • 1)

    Concentration of urine depends upon which part of the nephron

  • 2)

    If Henle's loop were absent from mammalian nephron, which one of the following is to be expected?

  • 3)

    A person who is on a long hunger strike and is , surviving only on water, will have

  • 4)

    What will happen if the stretch receptors of the urinary bladder wall are totally removed?

  • 5)

    The end product of Ornithine cycle is

11th Standard Biology Unit - 7 Important Questions - by Periyar Matric Higher Secondary School View & Read

  • 1)

    Which one of the following plasma proteins is involved in the coagulation of blood?

  • 2)

    Which of the following WBCs are found in more numbers

  • 3)

    Which of the following is not involved in blood clotting?

  • 4)

    Lymph is colourless because

  • 5)

    Blood group is due to the presence or absence of surface

11th Biology Model Question Paper 2 - by Gowtham View & Read

  • 1)

    Which one of the following statement about virus is correct?

  • 2)

    Identify the incorrect statement about the Gram positive bacteria

  • 3)

    Identify the Archaebacterium

  • 4)

    The respiratory pigment in cockroach is

  • 5)

    Exoskeleton of which phylum consists of chitinous cuticle?

11th Biology Important Question Paper - by Gowtham View & Read

  • 1)

    Vexillary aestivation is characteristic of the family

  • 2)

    Gynoecium with united carpels is termed as

  • 3)

    Which of the following is a flowering plant with nodules containing filamentous nitrogen fixing micro-organisms?

  • 4)

    Flowers are zygomorphic in

  • 5)

    Duplicate specimen of the holotype collected from same population _____________.

11th Biology Important Three Marks Question Paper - by Gowtham View & Read

  • 1)

    What are Corolloid roots?  

  • 2)

    What is the contribution of prof. Birbal Sahni? 

  • 3)

    Mention three salient features of Brown algae.

  • 4)

    The term 'form genera' is used to name fossil plants - Explain.

  • 5)

    Describe the structure of pteridophytes.

11th Biology One Mark Important Question Paper - by Gowtham View & Read

  • 1)

    The growing tip of the root _____.

  • 2)

    _____ is an example for Lianas.

  • 3)

    ______ is a submerged aquatic plant.

  • 4)

    The root in Dahlia is described as ___

  • 5)

    Stilt roots are also called _____

11th Biology Model Question Paper 1 - by Gowtham View & Read

  • 1)

    The most basic amino acid is

  • 2)

    Proteins perform many physiological functions. For example some functions as enzymes. One of the following represents an additional function that some proteins discharge:

  • 3)

    A living organism is differentiated from non- living structure based on

  • 4)

    A group of organisms having similar traits of a rank is

  • 5)

    Every unit of classification regardless of its rank is

Important One Mark Question Paper In 11th Biology - by Gowtham View & Read

  • 1)

    The correct statement regarding Blue green algae is

  • 2)

    Identify the correctly matched pair

  • 3)

    Who coined the word Bacterium?

  • 4)

    In the year 1911, the classification of viruses is given by ____________.

  • 5)

    Which of following represent generation in pteridophytes?

Living World Important Question Paper In 11th Zoology - by Gowtham View & Read

  • 1)

    Every unit of classification regardless of its rank is

  • 2)

    Which of the following is not present on same rank?

  • 3)

    Which taxonomic aid gives comprehensive information about a taxon?

  • 4)

    Who coined the term biodiversity

  • 5)

    Cladogram considers the following characters

Cell Cycle Important Question Paper In 11th Biology - by Gowtham View & Read

  • 1)

    The correct sequence in cell cycle is

  • 2)

    If mitotic division is restricted in G1 phase of the cell cycle then the condition is known as

  • 3)

    Anaphase promoting complex APC is a protein degradation machinery necessary for proper mitosis of animal cells. If APC is defective in human cell, which of the following is expected to occur?

  • 4)

    In S phase of the cell cycle

  • 5)

    Centromere is required for

Biomolecules Important Question Paper In 11th Biology - by Gowtham View & Read

  • 1)

    The most basic amino acid is

  • 2)

    An example of feedback inhibition is

  • 3)

    Enzymes that catalyse interconversion of optical, geometrical or positional isomers are

  • 4)

    Proteins perform many physiological functions. For example some functions as enzymes. One of the following represents an additional function that some proteins discharge:

  • 5)

    Membrane lipids are ____________.

Cell: The Unit Of Life Important Question Papetr In 11th Biology - by Gowtham View & Read

  • 1)

    The two subunits of ribosomes remain united at critical ion level of

  • 2)

    Sequences of which of the following is used to know the phylogeny

  • 3)

    Many cells function properly and divide mitotically even though they do not have

  • 4)

    Keeping in view the fluid mosaic model for the structure of cell membrane, which one of the following statements is correct with respect to the movement of lipid and proteins from one lipid monolayer to the other

  • 5)

    Match the columns and identify the correct option:

      Column I   Column II
    A Thylakoids 1. Disc-shaped sacs in Golgi apparatus
    B. Cristae 2. Condensed structure of DNA
    C. Cisternae 3. Flat membranous sacs in stroma
    D Chromatin 4. Infoldings in mitochondria

Important Question Paper In 11th Biology - by Gowtham View & Read

  • 1)

    Specimen derived from non-original collection serves as the nomenclatural type, when original specimen is missing. It is known as

  • 2)

    Phylogenetic classification is the most favoured classification because it reflects

  • 3)

    The taxonomy which involves the similarities and dissimilarities among the immune system of different taxa is termed as

  • 4)

    Which of the following is a flowering plant with nodules containing filamentous nitrogen fixing micro-organisms?

  • 5)

    Flowers are zygomorphic in

Reproductive Morphology Important Question Paper In 11th Biology - by Gowtham View & Read

  • 1)

    Vexillary aestivation is characteristic of the family

  • 2)

    Gynoecium with united carpels is termed as

  • 3)

    Aggregate fruit develops from

  • 4)

    In an inflorescence where flowers are borne laterally in an acropetal succession the position of the youngest floral bud shall be

  • 5)

    A true fruit is the one where

Vegetative Morphology Important Question Paper In 11th Biology - by Gowtham View & Read

  • 1)

    Roots are

  • 2)

    When the root is thick and fleshy, but, does not taken a definite shape, it said to be

  • 3)

    Example for negatively geotropic roots

  • 4)

    Curcuma amada, Curcuma domestica, Asparagus, Maranta are example of

  • 5)

    Bryophyllum and Dioscorea are example for

11th Biology Plant Kingdom Important Question Paper - by Gowtham View & Read

  • 1)

    Which of the plant group has gametophyte as a dominant phase?

  • 2)

    Which of following represent generation in pteridophytes?

  • 3)

    The haploid number of chromosome for an Angiosperm is 14, the number of chromosome in its endosperm would be

  • 4)

    Endosperm in Gymnosperm is formed

  • 5)

    Identify the odd one based on vegetative reproduction in algae.

Living World Important Question Paper In 11th Biology - by Gowtham View & Read

  • 1)

    Which one of the following statement about virus is correct?

  • 2)

    Identify the incorrect statement about the Gram positive bacteria

  • 3)

    Identify the Archaebacterium

  • 4)

    The correct statement regarding Blue green algae is

  • 5)

    Identify the correctly matched pair

11th Bio-botany One Marks Question Paper - by Gowtham View & Read

  • 1)

    Identify the incorrect statement about the Gram positive bacteria

  • 2)

    Identify the correctly matched pair

  • 3)

    Monotropa derives nutrition by ___________

  • 4)

    Living organisms constitute __________

  • 5)

    TMV has a molecular weight of _____________ Daltons.