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10th Standard Science - Plant and Animal Hormones Model Question Paper Oct-25 , 2019

Plant and Animal Hormones 

10th Standard Science - Plant and Animal Hormones Model Question Paper

Plant and Animal Hormones Model Question Paper

10th Standard

    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

  6. ______ are called chemical messengers.

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    Hormones

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

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    Zeatin

  8. The posterior pituitary is also called ______

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    neurohypophysis

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

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    Melatonin

  10. ______ is also known as ADH.

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    Vasopressin

    11. 5 x 1 = 5

  11. Thyroxine

    12. (1)

    Secrete the female sex hormones.

  12. Parathormone

    13. (2)

    Tetany

  13. ADH

    14. (3)

    Testes

  14. Leydig cells

    15. (4)

    Simple goitre

  15. Ovary

    16. (5)

    Diabetes insipidus
    6 x 2 = 12

  16. Which hormone promotes the production of male flowers in Cucurbits?

  17. Write the name of a synthetic auxin.

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

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

  20. Name the endocrine glands associated with kidneys.

    21. 4 x 4 = 16

  21. What are chemical messengers?

  22. Write the differences between endocrine and exocrine gland.

  23. What is the role of parathormone?

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

    25. 1 x 7 = 7

  25. Write the physiological effects of gibberellins.

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