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General Science — Basic Science Embryology Gametogenesis

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1. A complicated process of growth and change converts the spermatid into a

A. Spermatogonia
B. Primary spermatocyte
C. Secondary spermatocyte
D. Function sperm
Correct Option: Function sperm

2. Which are called sperm mother cells

A. Spermatids
B. Spermatogonia
C. Spermatocytes
D. SPrimordial germ cells
Correct Option: Spermatids

3. Embryology is

A. The study of development of sex cells
B. The study of development of sex organs
C. The study of an individual from the fertilized egg
D. The study of development of plant
Correct Option: The study of an individual from the fertilized egg

4. From a primary Oocyte

A. One egg is produced
B. Three eggs are produced
C. Four eggs are produced
D. Two eggs are produced
Correct Option: One egg is produced

5. Each centriole in the mature sperm consists of

A. 2 central and 9 peripheral fibrils
B. 3 central and 6 peripheral fibrils
C. 4 central and 5 peripheral fibrils
D. 9 central and 2 peripheral fibrils
Correct Option: 2 central and 9 peripheral fibrils

6. .Sertoli cells are otherwise called

A. Plasma cells
B. Nurse cells
C. Germinal cells
D. Parietal cells
Correct Option: Nurse cells

7. The cytoplasm surrounding the mitochondria found in the middle piece of the sperm is called

A. Acrosome
B. Centrosome
C. Microsome
D. Manchette
Correct Option: Manchette

8. The length of frog�s sperm ranges about

A. 0.01 - 0.02 mm
B. 0.01 - 0.03 mm
C. 0.02 - 0.03 mm
D. 0.03 - 0.04 mm
Correct Option: 0.03 - 0.04 mm

9. .At the end of spermatogenesis each primary spermatocyte gives rise to

A. Only one spermatid
B. Two spermatids
C. Three spermatids
D. Four spermatids
Correct Option: Four spermatids

10. Testis is made up of sperm tubules called

A. Malpighian tubules
B. Uriniferous tubules
C. Seminiferous tubules
D. Collecting Seminiferous tubules
Correct Option: Seminiferous tubules

11. Gametogenesis is the formation of

A. Gonads
B. Ova
C. Sperms
D. Gametes
Correct Option: Gametes

12. The size of the mature egg ranges from

A. 1000 - 2000 �
B. 1500 - 2000 �
C. 2000 - 2500 �
D. 2000 - 3000 �
Correct Option: 2000 - 3000 �

13. .Name the special cells which provide nutrient materials to the matured spermatozoa in the testis

A. Spermatogonia
B. Leydig�s cells
C. Interstitial cells
D. Sertoli cells
Correct Option: Sertoli cells

14. The function of Sertoli cells is

A. To secrete hormones
B. To help in ejaculation
C. To develop sperms
D. To provide nutrition to developing spermatozoa in the testis
Correct Option: To provide nutrition to developing spermatozoa in the testis

15. The acrosome is formed from

A. Nucleus
B. Golgi bodies
C. Centrosome
D. Mitochondria
Correct Option: Golgi bodies

16. The term gametogenesis means the

A. Formation of ovary
B. Formation of testis
C. Formation of gametes
D. Formation of embryo
Correct Option: Formation of gametes

17. Which one of the following undergo meiotic division

A. Primordial germ cells
B. Spermatogonia
C. Primary spermatocytes
D. Spermatids
Correct Option: Primary spermatocytes

18. First polar body is formed from

A. Primordial germ cells
B. Oogonia
C. Primary oocyte
D. Secondary oocyte
Correct Option: Primary oocyte

19. .In Rana pipens the period of growth in oogenesis takes about

A. One year
B. Two year
C. Three year
D. Four year
Correct Option: Three year

20. Acrosome of sperm is formed by

A. Mitochondria
B. Centriole
C. Golgi bodies
D. Nucleus
Correct Option: Golgi bodies

21. Spermatozoa get their nourishment from the

A. Nucleus
B. Cytoplasm
C. Sertoli cells
D. Ciliated Epithelium
Correct Option: Sertoli cells

22. How many ootids are formed in oogenesis

A. Only one
B. Two
C. Three
D. Four
Correct Option: Only one

23. Which part of sperm secretes lysine

A. Nucleus
B. Acrosome
C. Middle piece
D. Tail
Correct Option: Acrosome

24. .Chromosomal reduction during gametogenesis occurs due to the

A. Meiosis
B. Mitosis
C. Non-disjunction
D. Amitosis
Correct Option: Meiosis

25. The lysine secreted by the acrosome helps in the

A. Activation of sperm
B. Penetration of sperm
C. Clumping of sperm
D. Fertilization of sperm
Correct Option: Penetration of sperm

26. Which of the following undergoes differentiation process

A. Spermatogonia
B. Primary spermatocyte
C. Secondary spermatocyte
D. Spermatids
Correct Option: Spermatids

27. The unspecialized germ cells found in the seminiferous tubules are called

A. Primary spermatocytes
B. Secondary spermatocytes
C. Spermatogonia
D. Primordial germ cells
Correct Option: Primordial germ cells

28. The process of transformation of a spermatid into a spermatozoan is called as

A. Spermatogenesis
B. Gametogenesis
C. Spermiogenesis
D. Sperm maturation
Correct Option: Spermiogenesis

29. Phosphovitellin and Lipovitellin in the egg yolk are

A. Carbohydrates
B. Lipids
C. Vitamins
D. Proteins
Correct Option: Proteins

30. Lipovitellin is a

A. Lipids
B. Carbohydrates
C. Minerals
D. Proteinaceous substance
Correct Option: Proteinaceous substance