Zoology - Human Reproduction Important Questions

12th Standard EM

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Biology

Time : 01:00:00 Hrs
Total Marks : 50
    5 x 1 = 5
  1. The site of embryo implantation is the

    (a)

    Uterus

    (b)

    Peritoneal cavity

    (c)

    Vagina

    (d)

    Fallopian tube

  2. The foetal membrane that forms the basis of the umbilical cord is

    (a)

    Allantois

    (b)

    Amnion

    (c)

    Chorion

    (d)

    Yolk sac

  3. The most important hormone in intiating and maintaining lactation after birth is

    (a)

    Oestrogen

    (b)

    FSH

    (c)

    Prolactin

    (d)

    Oxytocin

  4. Assertion (A): The acrosome of the Sperm cell contains Sperm lysin.
    Reason (R): Sperm lysin destroys the deformed Sperm cells.

    (a)

    R explains A

    (b)

    A is right R is wrong

    (c)

    A an R are right R does not explains A

    (d)

    Both A and R are wrong

  5. _____ are endocrine cells.

    (a)

    Inhibitin

    (b)

    Leydig cells

    (c)

    Oogonia

    (d)

    Sertoli cells

  6. 5 x 1 = 5
  7. Ovulation

  8. (1)

    Testosterone

  9. Ley dig cell

  10. (2)

    Leutinising hormone

  11. Sertoli cells

  12. (3)

    Inhibin

  13. Corpus luteum

  14. (4)

    progesteron

  15. Placenta

  16. (5)

    Relaxin

    5 x 2 = 10
  17. What is colostrum? Write its significance.

  18. Placenta is an endocrine tissue. Justify

  19. Draw a labeled sketch of a spermatozoan.

  20. Name the Cells noticed in the epithelial layer of Seminiferous tubules.

  21. What do you mean by false labor?

  22. 5 x 3 = 15
  23. What is inhibin? State its functions

  24. Mention the importance of the position of the testes in humans.

  25. List out the three Primary Serm layers of embryo and Mention the organs developing from each layer.

  26. Explain the acrosomal reaction.

  27. What is the function of Sertoli cells?

  28. 3 x 5 = 15
  29. Explain the various phases of the menstrual cycle.

  30. Explain the role of oxytocin and relaxin in parturition and lactation.

  31. Differentiate Spermatogenesis and oogenesis.

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