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Human Reproduction Important Questions

12th Standard EM

    Reg.No. :
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Biology

Time : 01:00:00 Hrs
Total Marks : 50
    5 x 1 = 5
  1. The most important hormone in intiating and maintaining lactation after birth is

    (a)

    Oestrogen

    (b)

    FSH

    (c)

    Prolactin

    (d)

    Oxytocin

  2. Mammalian egg is

    (a)

    Mesolecithal and non cleidoic

    (b)

    Microlecithal and non cleidoic

    (c)

    Alecithal and non cleidoic

    (d)

    Alecithal and cleidoic

  3. The Androgen Binding Protein (ABP) is produced by

    (a)

    Leydig cells

    (b)

    Hypothalamus

    (c)

    Sertoli cells

    (d)

    Pituitary gland

  4. _____ are endocrine cells.

    (a)

    Inhibitin

    (b)

    Leydig cells

    (c)

    Oogonia

    (d)

    Sertoli cells

  5. ____ is not linked to male reproductive system.

    (a)

    Prostate gland

    (b)

    Corpus albicans

    (c)

    Cowper's gland

    (d)

    bulbourethral glands

  6. 5 x 2 = 10
  7. Mention the differences between spermiogenesis and spermatogenesis

  8. How is polyspermy avoided in humans?

  9. Draw a labeled sketch of a spermatozoan.

  10. What do you mean by false labor?

  11. Define Gametogenesis.

  12. 5 x 3 = 15
  13. Define gametogenesis.

  14. Describe the structure of the human ovum with a neat labelled diagram.

  15. What is the function of Sertoli cells?

  16. What is the role of FSH & LH in spermatogenesis?

  17. What is corpus luteum?

  18. 4 x 5 = 20
  19. Explain the various phases of the menstrual cycle.

  20. The following is the illustration of the sequence of ovarian events (a-i) in a human female.

    a) Identify the figure that illustrates ovulation and mention the stage of oogenesis it represents.
    b) Name the ovarian hormone and the pituitary hormone that have caused the above-mentioned events.
    c) Explain the changes that occurs in the uterus simultaneously in anticipation.
    d) Write the difference between C and H.

  21. Write a note on embryonic membranes

  22. Name the three primary germ layers of embryo. Also, mention any three organs or organ systems developing from each layer.

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