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Revision Model Question Paper 2

11th Standard

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Biology

Time : 03:00:00 Hrs
Total Marks : 70

    Part I

    Answer all the questions.

    Choose the most suitable answer from the given four alternatives and write the option code with the corresponding answer.

    15 x 1 = 15
  1. PHB means:

    (a)

    Poly Hexo Butyrate

    (b)

    Poly Hydrolxl Butyle

    (c)

    Poly - β Hydroxl Butyrate

    (d)

    Poly Hedral Butyrate

  2. Rolling or folding of individual leaves is called_____________

    (a)

    venation

    (b)

    phyllotaxy

    (c)

    ptyxis

    (d)

    branching

  3. What is the habit of Xanthorrhoea?

    (a)

    Trees

    (b)

    Erect

    (c)

    Climbing

    (d)

    Phylloclades

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

    (a)

    mRNA

    (b)

    rRNA

    (c)

    tRNA

    (d)

    Hn RNA

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

    (a)

    Reproduction

    (b)

    Growth

    (c)

    Metabolism

    (d)

    Movement

  6. The heart of cockroach has __________ chambers.

    (a)

    10

    (b)

    12

    (c)

    13

    (d)

    8

  7. The sphincter of Oddi guards

    (a)

    Hepatopancreatic duct

    (b)

    Common bile duct

    (c)

    Pancreatic duct

    (d)

    Cystic duct

  8. ________ are the blood cells which have two lobes which are joined by thin strands.

    (a)

    Neutrophils

    (b)

    Basophils

    (c)

    Eosinophils

    (d)

    Lymphocytes

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

    (a)

    Trochlear nerve

    (b)

    Optic nerve

    (c)

    Olfactory nerve

    (d)

    Vagus nerve

  10. Refer to the given figure and select the correct statement

    i. A, B, and C are histogen of shoot apex. 
    ii. A Gives rise to medullary rays.
    iii. B Gives rise to the cortex. 
    iv. C Gives rise to epidermis

    (a)

    i and ii only

    (b)

    ii and iii only

    (c)

    i and iii only

    (d)

    iii and iv only

  11. ___________ is an activator for RUBP Carboxylase and PEP Carboxylase.

    (a)

    Manganese

    (b)

    Magnesium

    (c)

    Zinc

    (d)

    Chlorine

  12. 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.

  13. The factors associated with compensation point are_____________.

    (a)

    Light and Humidity

    (b)

    O2 and CO2

    (c)

    CO2 and light

    (d)

    CO2 and Temperature

  14. Bio Assay of ABA was done with

    (a)

    cotton bolls

    (b)

    Pineapple

    (c)

    Rice

    (d)

    Sugarcane

  15. Normally, the heart beats ___________ times a minute when we are at rest.

    (a)

    60-100

    (b)

    70-100

    (c)

    80-100

    (d)

    100-120

  16. Part II

    Answer any 6 questions. Question no. 24 is compulsory.

    6 x 2 = 12
  17. Write the distinguishing features of Monera.

  18. Define axillary type of inflorescence.

  19. Mention about inflorescence and flower of Datura metal.

  20. What is the Role of the Nucleus?

  21. Differentiate between probiotics and pathogenic bacteria

  22. What is Canal of schlemm?

  23. Specify the symptoms of acromegaly

  24. What are the components of the sericulture industry?

  25. Why the cells of sclerenchyma and tracheids become dead?

  26. Part III

    Answer any 6 questions. Question no. 33 is compulsory.

    6 x 3 = 18
  27. Do you think shape of chloroplast is unique for algae? Justify your answer.

  28. What is Plasmodesmata?

  29. Explain the excretory system of Frog.

  30. 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

    (a)

    Protein synthesis

    (b)

    Cell division

    (c)

    Lipid synthesis

    (d)

    Active transport

  31. 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?

  32. Explain the types of carrier proteins.

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

  34. Write the importance of direct oxidative pathway.

  35. What is plasticity?

  36. Part IV

    Answer all the questions.

    5 x 5 = 25
    1. Briefly outline the classification of enzymes.

    2. Will a defoliated plant respond to photoperiodic cycle? Give reasons.

    1. Write the differences between dense regular connective tissues and dense irregular connective tissues.

    2. Malfunctioning of the kidneys can be treated by haemodialysis? Explain.

    1. Describe the structure of Mitochondria.

    2. Write a note on surfactants.

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

    2. Observe the animal below and answer the following questions.

      a. Identify the animal
      b. What type of symmetry does this animal exhibit?
      c. Is this animal Cephalized?
      d. How many germ layers does this animal have?
      e. How many openings does this animal's digestive system have?
      f. Does this animal have neurons?

    1. Draw the structure of different types of viruses and explain.

    2. What is Aestivation? Explain different types of aestivation

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