11th Public Exam March 2019 Model

11th Standard

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Biology

Time : 02:30:00 Hrs
Total Marks : 70
    16 x 1 = 16
  1. The T4 Phage is ________ shaped,

    (a)

    Tadpole

    (b)

    Rod

    (c)

    Coiled

    (d)

    Spiral

  2. Bryophyllum and Dioscorea are example for

    (a)

    Foliar bud, apical bud

    (b)

    Foliar bud, cauline bud

    (c)

    Cauline bud, apical bud

    (d)

    Cauline bud, foliar bud

  3. Inflorescence developed directly from a woody trunk_____________.

    (a)

    Floriculture

    (b)

    Terminal

    (c)

    Axillary

    (d)

    Cauliflorous

  4. Phase plate is a circular component with circular annular etching in___________________________

    (a)

    Phase Contrast Microscope

    (b)

    Micrometry

    (c)

    Ocular Micrometer

    (d)

    Stage Micrometer

  5. Cladogram considers the following characters

    (a)

    Physiological and Biochemical

    (b)

    Evolutionary and Phylogenetic

    (c)

    Taxonimic and systematic

    (d)

    None of the above

  6. Animals which active at night are called

    (a)

    diurnal

    (b)

    nocturnal

    (c)

    parasites

    (d)

    nocto-diurnal

  7. Which of the following does not have an open circulatory system?

    (a)

    Frog

    (b)

    Earthworm

    (c)

    Pigeon

    (d)

    Cockroach

  8. Make the correct pairs.

    Column I Column II
    (P) IC i) Maximum volume of air breathed in after forced
    (Q) EC ii) Volume of air present after expiration in lungs
    (R) VC iii) Volume of air inhaled after expiration.
    (S) FRC iv) Volume of air exhaled after inspiration.
    (a)
    P Q R S
    i ii iii iv
    (b)
    P Q R S
    ii iii iv i
    (c)
    P Q R S
    ii iii i iv
    (d)
    P Q R S
    iii iv i ii
  9. 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

  10. The ________________ in the body are replaced every 7-10 days.

    (a)

    RBC

    (b)

    Ruffini endings

    (c)

    Taste bud cells

    (d)

    Cones

  11. Which of the given option shows all wrong statements for thyroid gland.
    (i) It inhibits process of RBC formation
    (ii) It helps in maintenance of water and electrolytes
    (iii) Its more secretion can reduce blood pressure
    (iv) It Stimulates osteoblast

    (a)

    (i) and (ii)

    (b)

    (iii) and (iv)

    (c)

    (i) and (iv)

    (d)

    (i) and (iii)

  12. Choose the wrong statement:
    (A) Vermicompost bed must be selected in an elevated level.
    (B) The vermibed should be exposed to sunlight.
    (C) Water stagnation is necessary for the worms.
    (D) The size of a pit for vermiculture can vary.

    (a)

    A and B

    (b)

    A and C

    (c)

    B and C

    (d)

    A and D

  13. 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?

    (a)

    Xylem would be on top and the phloem on the bottom

    (b)

    Phloem would be on top and the xylem on the bottom

    (c)

    Xylem would encircle the phloem

    (d)

    Phloem would encircle the xylem

  14. The theory of K+ transport to explain stomatal opening was proposed by ____________

    (a)

    Steward

    (b)

    Levit

    (c)

    Hanes

    (d)

    Lloyd

  15. PSI is located on _____________

    (a)

    outer thylakoid membrane

    (b)

    inner thylakoid membrane

    (c)

    Stroma

    (d)

    Fret membrane

  16. 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
  17. 8 x 2 = 16
  18. What is plectostele? Give example.

  19. Define Perianth. Mention its type.

  20. What is SAT Chromosome?

  21. What are ureotelic animals?

  22. Name the visual units of the compound eyes of cockroach.

  23. Name the two sources of blood supply to the liver.

  24. What evolutionary hypothesis could explain the heart's role in secreting a hormone that regulates renal function? What hormone is this?

  25. Name the filaments present in the sarcomere.

  26. Mention the advantages of MOET.

  27. How are meristerms classified based on function.

  28. Write the role of nitrogenase enzyme in nitrogen fixation? 

  29. How does ABA show Antagonistic effect?

  30. 6 x 3 = 18
  31. What is meant by Ammonification? Explain with the bacteria involved in the process.

  32. Differentiate between aggregate fruit with multiple fruit.

  33. Write a short note on Chitin.

  34. Differentiate between peristomium and prostomium in earthworm.

  35. What is indigestion?

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

  37. In the diagram given below label any 4 parts.

  38. List any three common uses of shellac.

  39. What is Tyloses?

  40. What are phytochromes?

  41. 4 x 5 = 20
    1. Describe the process of transformation.

    2. Write down the economic importance of Family Fabaceae.

    1. What are the components of blood in frog?

    2. Write an account on the L.S. of heart with simple sketch.

    1. Identify the following structures and explain their significance in renal physiology?
      (a) Juxtaglomerular apparatus
      (b) Podocytes
      (c) Sphincters in the bladder
      (d) Renal cortex

    2. Briefly explain the structure of thyroid gland.

    1. Explain Cyclic photophosphorylation.

    2. Write the physiological effects of Cytokinins.

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