Plant and Animal Hormones Model Question Paper

10th Standard EM

    Reg.No. :
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Science

Time : 02:00:00 Hrs
Total Marks : 50
    5 x 1 = 5
  1. The hormone which has positive effect on apical dominance is:

    (a)

    Cytokinin

    (b)

    Auxin

    (c)

    Gibberellin

    (d)

    Ethylene

  2. Which one of the following hormones is naturally not found in plants.

    (a)

    2, 4-D

    (b)

    GA3

    (c)

    Gibberellin

    (d)

    IAA

  3. Avena coleoptile test was conducted by

    (a)

    Darwin

    (b)

    N. Smit

    (c)

    Paal

    (d)

    F.W. Went

  4. To increase the sugar production in sugarcanes they are sprayed with _______

    (a)

    Auxin

    (b)

    Cytokinin

    (c)

    Gibberellins

    (d)

    Ethylene

  5. LH is secreted by

    (a)

    Adrenal gland

    (b)

    Thyroid gland

    (c)

    Anterior pituitary

    (d)

    Hypothalamus.

  6. 5 x 1 = 5
  7. ______ are called chemical messengers.

    ()

    Hormones

  8. _____ is the cytokinin got form maize (Zea mays).

    ()

    Zeatin

  9. The posterior pituitary is also called ______

    ()

    neurohypophysis

  10. ______ is a hormone produced by the pineal gland.

    ()

    Melatonin

  11. ______ is also known as ADH.

    ()

    Vasopressin

  12. 5 x 1 = 5
  13. Thyroxine

  14. (1)

    Diabetes insipidus

  15. Parathormone

  16. (2)

    Testes

  17. ADH

  18. (3)

    Secrete the female sex hormones.

  19. Leydig cells

  20. (4)

    Simple goitre

  21. Ovary

  22. (5)

    Tetany

    6 x 2 = 12
  23. Which hormone promotes the production of male flowers in Cucurbits?

  24. Write the name of a synthetic auxin.

  25. What is the hormone responsible for the secretion of milk in female after child birth?

  26. Name the hormones which regulates water and mineral metabolism in man.

  27. Name the endocrine glands associated with kidneys.

  28. Draw a diagram to show the location of thyroid gland.

  29. 4 x 4 = 16
  30. What are chemical messengers?

  31. Write the differences between endocrine and exocrine gland.

  32. What is the role of parathormone?

  33. Which hormone requires iodine for its formation? What will happen if intake of iodine in our diet is low?

  34. 1 x 7 = 7
  35. Write the physiological effects of gibberellins.

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