+1 Public Exam March 2019 Important One Mark Questions

11th Standard

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Biology

Time : 00:45:00 Hrs
Total Marks : 100
    100 x 1 = 100
  1. Which one of the following statement about virus is correct?

    (a)

    Possess their own metabolic system

    (b)

    They are facultative parasites

    (c)

    They contain DNA or RNA

    (d)

    Enzymes are present

  2. The correct statement regarding Blue green algae is

    (a)

    lack of motile structures

    (b)

    presence of cellulose in cell wall

    (c)

    absence of mucilage around the thallus

    (d)

    presence of floridean starch

  3. Mycoplasma is very small and its ranges from __________.

    (a)

    0.1-0.5

    (b)

    0.1-5

    (c)

    0.2-0.3

    (d)

    2-3

  4. Lichen which grow on wood is called _________.

    (a)

    Lignicolous

    (b)

    Tericolous

    (c)

    Corticolous

    (d)

    Saxicolous

  5. Which of following represent generation in pteridophytes?

    (a)

    Prothallus

    (b)

    Thallus.

    (c)

    Cone

    (d)

    Rhizophore

  6. Endosperm in Gymnosperm is formed

    (a)

    At the time of fertilization.

    (b)

    Before fertilization.

    (c)

    After fertilization.

    (d)

    Along with the development of embryo .

  7. Fucus and Laminaria are rich in_______

    (a)

    Calcium

    (b)

    Vitamin

    (c)

    Nitrogen

    (d)

    Iodine

  8. The stele is split into distinct collateral vascular bundles around the pith is _________ .

    (a)

    Eustele

    (b)

    Protostele

    (c)

    Solenostele

    (d)

    Actinostele

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

    (a)

    Nodulose root

    (b)

    Tuberous root

    (c)

    Monilliform root

    (d)

    Fasiculated root

  10. Example for negatively geotropic roots

    (a)

    Ipomoea, Dahlia

    (b)

    Asparagus, Ruellia

    (c)

    Vitis, Portulaca

    (d)

    Avicennia, Rhizophora

  11. Form which point of root, root hairs develop?

    (a)

    Region of maturation

    (b)

    Region of elongation

    (c)

    Meristematic region

    (d)

    Region of root cap

  12. Plants grow on rocks is called ________.

    (a)

    Mesophytes

    (b)

    Xerophytes

    (c)

    lithophytes

    (d)

    Psammophytes

  13. Vexillary aestivation is characteristic of the family

    (a)

    Fabaceae

    (b)

    Asteraceae

    (c)

    Solanaceae

    (d)

    Brassicaceae

  14. Aggregate fruit develops from

    (a)

    Multicarpellary, apocarpous ovary

    (b)

    Multicarpellary, syncarpous ovary

    (c)

    Multicarpellary ovary

    (d)

    Whole inflorescence

  15. The seeds of __________ is viable for 20,000 years.

    (a)

    Date palm

    (b)

    Sesame

    (c)

    Pumpkin

    (d)

    Colocasia

  16. A flower which can be divided into equal vertical halves, by more than one plane of division is __________.

    (a)

    zygomorphic

    (b)

    cyclic

    (c)

    actinomorphic

    (d)

    heteromorphic

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

    (a)

    Holotype

    (b)

    Neotype

    (c)

    Isotype

    (d)

    Paratype

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

    (a)

    Crotalaria juncea

    (b)

    Cycas revoluta

    (c)

    Cicer arietinum

    (d)

    Casuarina equisetifolia

  19. Flowers are zygomorphic in

    (a)

    Ceropegia

    (b)

    Thevetia

    (c)

    Datura

    (d)

    Solanum

  20. _________is a complete global account of a taxon of any rank.

    (a)

    Monograph

    (b)

    Catalogs

    (c)

    Luca Ghini

    (d)

    Herbaria

  21. Smith defined it as the study of the origins j and properties of antisera _________.

    (a)

    Serotaxonomy

    (b)

    Molecular taxonomy

    (c)

    Phylogenetic tree

    (d)

    Restriction Fragment Length Polymorphism

  22. What is the habit of Colchicum?

    (a)

    Liliaceae

    (b)

    Polygonatum

    (c)

    Bulb

    (d)

    Corm

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

    (a)

    Magnesium

    (b)

    Calcium

    (c)

    Sodium

    (d)

    Ferrous

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

    (a)

    mRNA

    (b)

    rRNA

    (c)

    tRNA

    (d)

    Hn RNA

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

    (a)

    plasma membrane

    (b)

    cytoskeleton

    (c)

    mitochondria

    (d)

    plastids

  26. _____________________is a complex colloidal system which was suggested by Fisher in 1894 and Hardy.

    (a)

    Protoplasm

    (b)

    Homogeneous

    (c)

    Heterogeneous

    (d)

    Gel

  27. ____________________are called Power house of a cell.

    (a)

    Golgi bodies

    (b)

    Mitochondria

    (c)

    Mitochondrial DNA

    (d)

    Chloroplasts

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

    (a)

    S Phase

    (b)

    G2 Phase

    (c)

    M Phase

    (d)

    Go Phase

  29. The paring of homologous Chromosomes on meiosis is known as

    (a)

    Bivalent

    (b)

    Synapsis

    (c)

    Disjunction

    (d)

    Synergids

  30. In plants, phragmoplast are formed between the daughter cells in ____________ .

    (a)

    Prophase

    (b)

    Metaphase

    (c)

    Anaphase

    (d)

    Telophase

  31. Nuclei are reassembled in __________ .

    (a)

    Independent assortment

    (b)

    Anaphase I

    (c)

    Telophase I

    (d)

    Meiosis II

  32. An example of feedback inhibition is

    (a)

    Cyanide action on cytochrome

    (b)

    Sulpha drug on folic acid synthesiser bacteria

    (c)

    Allosteric inhibition of hexokinase by glucose - 6 - phosphate

    (d)

    The inhibition of succinic dehydrogenase by malonate

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

    (a)

    Antibiotics

    (b)

    Pigment conferring colour to skin

    (c)

    Pigments making colours of flowers

    (d)

    Hormones

  34. In a water molecule, the hydrogen and oxygen atom stick together by:

    (a)

    Monovalent bond

    (b)

    Covalent bond

    (c)

    Hydrogen bond

    (d)

    None of the above

  35. A molecule of glycerol bond to have:

    (a)

    5 fatty acids

    (b)

    6 fatty acids

    (c)

    4 fatty acids

    (d)

    3 fatty acids

  36. Every unit of classification regardless of its rank is

    (a)

    Taxon

    (b)

    Variety

    (c)

    Species

    (d)

    Strain

  37. Who coined the term biodiversity

    (a)

    Walter Rosen

    (b)

    AG Tansley

    (c)

    Aristotle

    (d)

    AP de Candole

  38. The binomial name of National animal of lndia is:

    (a)

    Panthera tigris

    (b)

    Corvus splendens

    (c)

    Felis domestica

    (d)

    Liger

  39. The cross between male lion and female tiger results in the production of

    (a)

    Mule

    (b)

    Tigon

    (c)

    Liger

    (d)

    Hinny

  40. Which of the following animals has a true coelom?

    (a)

    Ascaris

    (b)

    Pheretima

    (c)

    Sycon

    (d)

    Taenia solium

  41. Which of the following is a crustacean

    (a)

    Prawn

    (b)

    Snail

    (c)

    Sea anemone

    (d)

    Hydra

  42. The second largest animal phylum is:

    (a)

    Ctenophora

    (b)

    Arthropoda

    (c)

    Mollusca

    (d)

    Coelenterata

  43. Which of the following respires through gills

    (a)

    whale

    (b)

    Turtle

    (c)

    frog

    (d)

    Prawns

  44. Prevention of substances from leaking across the tissue is provided by

    (a)

    Tight junction

    (b)

    Adhering junction

    (c)

    Gap junction

    (d)

    Elastic junction

  45. Non-shivering thermogenesis in neonates produces heat through

    (a)

    White fat

    (b)

    Brown fat

    (c)

    Yellow fat

    (d)

    Colourless fat

  46. Matrix of bone and cartilage can be distinguished by the presence of:

    (a)

    Lacunae

    (b)

    Chromatophares

    (c)

    Haversian canals

    (d)

    Adipose cells

  47. Which of these is not found in connective tissue :

    (a)

    Collagen fibres

    (b)

    Basement membrane

    (c)

    Hyaluronic acid

    (d)

    Fluid

  48. Buccopharyngeal respiration in frog

    (a)

    is increased when nostrils are closed

    (b)

    Stops when there is pulmonary respiration

    (c)

    is increased when it is catching fly

    (d)

    stops when mouth is opened.

  49. Presence of gills in the tadpole of frog indicates that

    (a)

    fishes were amphibious in the past

    (b)

    fishes involved from frog -like ancestors

    (c)

    frogs will have gills in future

    (d)

    frogs evolved from gilled ancestor

  50. _________ is not found in female cockroach.

    (a)

    Colleterial gland

    (b)

    Gonapophyses

    (c)

    Spermathecae

    (d)

    Conglobate gland

  51. Which of the following is not a feature of frog?

    (a)

    presence of webbed deet

    (b)

    absence of teeth

    (c)

    smooth and moist skin

    (d)

    slender body

  52. What is chyme__________ ?

    (a)

    The process of conversion of fat into small droplets.

    (b)

    The process of conversion of micelles substances of glycerol into fatty droplet.

    (c)

    The process of preparation of incompletely digested acidic food through gastric juice.

    (d)

    The process of preparation of completely digested liquid food in midgut.

  53. The sphincter of Oddi guards

    (a)

    Hepatopancreatic duct

    (b)

    Common bile duct

    (c)

    Pancreatic duct

    (d)

    Cystic duct

  54. Which of the following is the last phase of the process of digestion?

    (a)

    ingestion

    (b)

    assimilation

    (c)

    egestion

    (d)

    digestion

  55. Identify the odd one

    (a)

    maltose

    (b)

    lactose

    (c)

    sucrose

    (d)

    sucrase

  56. Gastrin is

    (a)

    Hormone

    (b)

    enzyme

    (c)

    Nutrient

    (d)

    Digestive secretion

  57. CO2 is transported through blood to lungs as

    (a)

    carbonic acid

    (b)

    oxyhaemoglobin

    (c)

    carbamino haemoglobin

    (d)

    carboxy haemoglobin

  58. Which of the following best describes the process of gas exchange in the lungs?

    (a)

    Air moves in and out of the alveoli during breathing.

    (b)

    Carbon dioxide diffuses from deoxygenated blood in capillaries into the alveolar air.

    (c)

    Oxygen and carbon dioxide diffuse down their concentration gradients between blood and alveolar air.

    (d)

    Oxygen diffuses from alveolar air into the deoxygenated blood.

  59. The ______________ lack cartilaginous rings.
    (i) Trachea (ii) Bronchi (iii) Bronchioles (iv) Alveoli

    (a)

    (a) i and iii

    (b)

    ii and iii

    (c)

    i, ii and iii

    (d)

    iii and iv

  60. Name the chronic respiratory disorder caused mainly by cigarette smoking

    (a)

    Emphysema

    (b)

    Asthma

    (c)

    Respiratory acidosis

    (d)

    Respiratory alkalosis

  61. Which of the following is not involved in blood clotting?

    (a)

    Fibrin

    (b)

    Calcium

    (c)

    Platelets

    (d)

    Bilirubin

  62. Erythroblastosis foetalis is due to the destruction of

    (a)

    Foetal RBCs

    (b)

    Foetus suffers from atherosclerosis

    (c)

    Foetal WBCs

    (d)

    Foetus suffers from minamita

  63. What is the percentage of lymphocytes among WBCs?

    (a)

    0.5% to 1.0%

    (b)

    1-3 %

    (c)

    65%

    (d)

    28%

  64. In systemic circulation, blood from the _________ ventricle is carried by a network of arteries, arterioles and capillaries to the tissues.

    (a)

    deoxygenated, right

    (b)

    oxygenated, left

    (c)

    oxygenated, right

    (d)

    deoxygenated, left

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

    (a)

    There will be no urine formation

    (b)

    There will be hardly any change in the quality : and quantity of urine formed

    (c)

    The urine will be more concentrated

    (d)

    The urine will be more dilute

  66. Podocytes are the cells present on the

    (a)

    Outer wall of Bowman's capsule

    (b)

    Inner wall of Bowman's capsule

    (c)

    Neck of nephron

    (d)

    Wall glomerular capillaries

  67. ____________is not a waste product.

    (a)

    Guanine

    (b)

    Creatinine

    (c)

    Urea

    (d)

    Ribose

  68. The major function of Henle's loop is to concentrate_____________

    (a)

    Na+ and Cl-

    (b)

    K+ ions

    (c)

    Na+ and K+ ions

    (d)

    Na- and CI+ ions

  69. The protein present in the thick filament is

    (a)

    myosin

    (b)

    actin

    (c)

    pectin

    (d)

    leucin

  70. Knee joint is an example of

    (a)

    saddle joint

    (b)

    hinge joint

    (c)

    pivot joint

    (d)

    gliding joint

  71. __________is a unpaired bone.

    (a)

    Maxilla

    (b)

    Palatine

    (c)

    Vomer

    (d)

    Zygomatic

  72.  Pivot joint is also called ______________

    (a)

    saddle joint

    (b)

    ellipsoidal joint

    (c)

    plane joint

    (d)

    swivel joint

  73. Which of the following cranial nerve controls the movement of eye ball ?

    (a)

    Trochlear nerve

    (b)

    Optic nerve

    (c)

    Olfactory nerve

    (d)

    Vagus nerve

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

    (a)

    Its pathways innervate skeletal muscles

    (b)

    Its pathways are usually voluntary

    (c)

    Some of its pathways are referred to as reflex arcs

    (d)

    Its pathways always involve four neurons

  75. ___________ is not related to inner ear.

    (a)

    Saccule

    (b)

    Utricle

    (c)

    Ossicle

    (d)

    Organ of corti

  76. __________ is a mixed nerve.

    (a)

    Hypoglossal

    (b)

    Optic

    (c)

    Olfactory

    (d)

    Facial

  77. Serum calcium level is regulated by

    (a)

    Thyroxine

    (b)

    FSH

    (c)

    Pancreas

    (d)

    Thyroid and Parathyroid

  78. The structure which connects the hypothalamus with anterior lobe of pituitary gland is the

    (a)

    Dendrites of neuro hypophysis

    (b)

    Axon's of neurohypophysis

    (c)

    Bands of white fibers from cerebellar region

    (d)

    Hypophysial portal system

  79. ________________is also known stimulating hormone.

    (a)

    LTH

    (b)

    LH

    (c)

    FSH

    (d)

    ACTH

  80. Assertion (A): The half life Period of insulin in plasma is 6 minutes.
    Reason (R): It is cleared from circulation within 10-15 minutes.

    (a)

    A and R are wrong

    (b)

    A is right but R is wrong

    (c)

    A is right and R explains A

    (d)

    A is wrong R is right

  81. Match the following.

    1. Bombyx mori (a) Champa (I) Muga
    2. Antheraea assamensis (b) Mulberry (II) Eri
    3. Antheraea mylitta (c) Arjun (III) Tassar
    4. Attacus ricini (d) Castor (IV) Mulberry

    Select the correct one.

    (a)

    1 - b - IV

    (b)

    2 - a - I

    (c)

    3 - c - III

    (d)

    4 - d - II

    (e)

    All Options are correct

  82. Inland fisheries are

    (a)

    deep sea fishing

    (b)

    capturing fishes from sea coast

    (c)

    raising and capturing fishes in fresh water

    (d)

    oil extraction from fish

  83. ___________ is a breed found in West Bengal.

    (a)

    Silkie

    (b)

    Chittagong

    (c)

    Deoni

    (d)

    Brahma

  84. Say True or False.
    Worker bee prepares bee-bread to feed the larvae

    (a)

    True

    (b)

    false

  85. In Gymnosperms, the activity of sieve tubes are controlled by

    (a)

    Nearby sieve tube members

    (b)

    Phloem parenchyma cells

    (c)

    Nucleus of companion cells

    (d)

    Nucleus of albuminous cells.

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

    (a)

    Vascular bundles arranged in a ring

    (b)

    Cambium for secondary growth

    (c)

    Vessels with elements arranged end to end

    (d)

    Cork cambium

  87. Consider the following statements:
    In spring season vascular cambium
    i. is less active.
    ii. produces a large number of xylary elements.
    iii. forms vessels with wide cavities of these

    (a)

    (i) is correct but (ii) and (iii) are not correct

    (b)

    (i) is not correct but (ii) and (iii) are correct

    (c)

    (i) and (ii) are correct but (iii) is not correct

    (d)

    (i) and (ii) are not correct but (iii) is correct.

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

    (a)

    It is retained in the center of the axis

    (b)

    It gets crushed

    (c)

    May or may not get crushed

    (d)

    It gets surrounded by primary phloem

  89. In a fully turgid cell

    (a)

    DPD = 10 atm; OP = 5 atm; TP = 10 atm

    (b)

    DPD = 0 atm; OP = 10 atm; TP = 10 atm

    (c)

    DPD = 0 atm; OP = 5 atm; TP = 10 atm

    (d)

    DPD = 20 atm; OP = 20 atm; TP = 10 atm

  90. Stomata of a plant open due to

    (a)

    Influx of K+

    (b)

    Efflux of K+

    (c)

    Influx of Cl-

    (d)

    Influx of OH-

  91. Identify correct match:

    1. Die back disease of citrus (i) Mo
    2. Whip tail disease (ii) Zn
    3. Brown heart of turnip (iii) Cu
    4. Little leaf (iv) B
    (a)

    1(iii) 2 (ii) 3 (iv) 4 (i)

    (b)

    1 (iii) 2 (i) 3 (iv) 4 (ii)

    (c)

    1 (i) 2 (iii) 3 (ii) 4 (iv)

    (d)

    1 (iii) 2 (iv) 3 (ii) 4 (i)

  92. If a plant is provided with all mineral nutrients but, Mn concentration is increased, what will be the deficiency?

    (a)

    Mn prevent the uptake of Fe, Mg but not Ca

    (b)

    Mn increase the uptake of Fe, Mg and Ca

    (c)

    Only increase the uptake of Ca

    (d)

    Prevent the uptake Fe, Mg, and Ca

  93. Which chlorophyll molecule does not have a phytol tail?

    (a)

    Chl- a

    (b)

    Chl-b

    (c)

    Chl- c

    (d)

    Chl -d

  94. Identify true statement regarding the light reaction of photosynthesis?

    (a)

    Splitting of water molecule is associate with PS I.

    (b)

    PS I and PS II involved in the formation of NDPH + H+

    (c)

    The reaction center of PS I is Chlorophyll a with the absorption peak at 680 nm.

    (d)

    The reaction center of PS II is Chlorophyll a with the absorption peak at 700 nm.

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

    (a)

    12

    (b)

    13

    (c)

    14

    (d)

    15

  96. The compound which links glycolysis and Krebs cycle is

    (a)

    succinic acid

    (b)

    pyruvic acid

    (c)

    acetyl CoA

    (d)

    citric acid

  97. Which of the following reaction is not involved in Krebs cycle

    (a)

    Shifting of phosphate from 3C to 2C

    (b)

    Splitting of Fructose 1,6 bisphosphate of into two molecules 3C compounds

    (c)

    Dephosphorylation from the substrates

    (d)

    All of these

  98. 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.

    (a)

    3 inches

    (b)

    6 inches

    (c)

    12 inches

    (d)

    30 inches

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

    (a)

    Ethanol

    (b)

    Cytokinins

    (c)

    ABA

    (d)

    Auxin

  100. 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
    (a)
    A B C D E F
    iii iv v vi i ii
    (b)
    A B C D E F
    v i ii iv vi iii
    (c)
    A B C D E F
    iii v vi i ii iv
    (d)
    A B C D E F
    ii iii v vi iv i

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