NEET : Multiple Choice Questions: Spermatogenesis
1. Which of the following statement is not correct.
A. The formation of haploid gamete in male and female gonad is called gametogenesis.
B. The formation of male gamete in testes is called spermatogenesis.
C. Male and female gamete are diploid.
D. The formation of female gamete in ovaries is called oogenesis
Answer: C Explanation
2. In testes, the immature male germ cell produce sperms by spermatogenesis at puberty. The immature germ cell is
A. Leydig cell
B. Sertoli cell
C. Spermatogonia
D. Nurse cell
Answer : C Explanation
3. Spermatogonia is present inside the wall in testes at
A. Interstitial space
B. Seminiferous tubules
C. Near Leydig cell
D. Tunica albuginea
Answer : B Explanation
4. Consider the following cells involved in spermatogenesis and arrange them in sequence
1. Prmary spermatocytes
2. Secondary spermatocytes
3. Spermatids
4. Spematozoa
5. Spermatogonia
A. 1- 2- 3- 4- 5
B. 5- 1- 2- 3- 4
C. 1- 3- 2- 5- 4
D. 5- 2- 1- 4- 3
Answer : B Explanation
5. Which of the following statements is not correct about the spermatogonia.
A. Spermatogonia multiply by meiosis division.
B. Spermatogonia divides to ncrease their numbers.
C. Each spermatogonium is diploid and contains 46 Chromosomes.
Some of the spermatogonia called primary spermatocytes.
Answer : A Explanation
6. Spermatogonia divides by mitosis and form diploid
A. Primary spermatocytes
B. Secondary spermatocytes
C. Spermatids
D.Spermatozoa
Answer : A Explanation
7. The primary spermatocyte Complete the first meiotic division and form
A. Secondary spermatocytes
B. Spermatogonia
C. Spermatids
D. Spermatozoa
Answer : A Explanation
8. Primary spermatocyte divides and form secondary spermatocytes. These are
A. Equal , haploid and four in number
B. Unequal , haploid and four in number
C. Equal , diploid and two in number
D. Equal , haploid and two in number
Answer: D Explanation
9. Each Secondary spermatocyte divides by second meiotic division and form spermatids . These are
A. Equal , haploid and four in number
B. Unequal , haploid and four in number
C. Equal , diploid and two in number
D. Equal , haploid and two in number
Answer: A Explanation
10. Which one of the following during the spermatogenesis contain 46 Chromosomes.
A. Secondary spermatocytes and spermatids
B. Primary Spermatocytes and spermatogonia
C. Spermatids and spermatozoa
D. Spermatids and spermatogonia
Answer: B Explanation
12. Spermiogensis is a process by which transformation takes place from
A. Primary Spermatocytes to Secondary spermatocyte
B. Spermatogonia to Primary Spermatocytes
C. Secondary spermatocytes into spermatids
D. Spermatids into spermatozoa
Answer : D Explanation
13. Which one of the following statements is incorrect.
A.The spermatids are transformed into spermatozoa (sperms) by the process of spermiogenesis. B. Sperm heads become embedded in the Sertoli cells after spermiogensis.
C. Sperm are finally released from the seminiferous tubules by the process of
spermiation.
D. Temperature and hormone do not affect the process of spermatogenesis.
Answer : D Explanation
14. Which one of the following during the spermatogenesis are haploid.
A. Secondary spermatocytes and spermatogonia
B. Primary Spermatocytes and spermatogonia
C. Spermatids and spermatozoa
D. Spermatids and spermatogonia
Answer: C Explanation
15. Spermatogenesis starts at the age of puberty due to significant increase in the secretion of a hypothalamic hormone called
A. Testosterone
B. Leutinizing hormone
C. Follicle stimulating hormone
D. Gonadotropin releasing hormone( GnRH)
Answer : D Explanation
16. The increase levels of GnRH acts at the anterior pituitary gland and stimulates the secretion of two hormone
A. Androgen and Testosterone
B. LH and FSH
C. Androgen and LH
D. GnRH and FSH
Answer : B Explanation
17. Consider the following statements and select the correct code:
1. FSH acts at the Leydig cells and stimulates synthesis and secretion of androgens.
2. LH acts on the Sertoli cells and stimulates seminiferous tubules to provide the nourishment
A. Only 1. B. Only 2
C. Both 1 and 2
D. Neither 1 nor 2
Answer : D Explanation
18. Consider the following Diagram and identify and the letter A and B
A. Leutinising Hormone and
Sertoli cell
B. Germ cells and Leutinising
HormoneC. Seminiferous tubules and Sertoli cell
D. Seminiferous tubules and male Germ cells
Answer : A Explanation
19. Consider the following part of sperm covered by the plasma membrane and select the correct code:
1. Head 2. Tail
3. Neck. 4. Middle piece
A. 1 and 2. B. 1, 3 and 4
C. 1 2 and 4 D. 1,2,3 and 4
Answer : D Explanation
20. The sperm head contain
A. Nucleus and mitochondria
B. Acrosome and nucleus
C. Mitochondria and Acrosome
D. Nucleus , Acrosome and Mitochondria
Answer : B Explanation
21. Which of the following statements is not correct.
A. The anterior portion of head
is covered by a cap-like structure, acrosome.
B. The acrosome is filled with lytic enzymes that help fertilisation of the ovum.
C. Acrosome is derived from the golgi body.
D. Acrosome contain numerous mitochondria.
Answer : D Explanation
22. Which part of sperm contain numerous mitochondria.
A. Head B. Neck
C. Middle Piece. D. Tail
Answer : C Explanation
23. Consider the following statements and select the correct code:
1. Mitochondria produce energy for the movement of tail.
2. Tail facilitate sperm motility essential for fertilisation.
3. The human male ejaculates about 200 to 300 million sperm.
A.1 and 2 B. 2 and 3
C. 1 2 and 3 D. 1 and 3
Answer : C Explanation
24. For Normal fertility what percentage of sperm must have normal size and shape.
A. 50. B. 60 C. 70 D. 90
Answer : B Explanation
25. For Normal fertility what percentage of sperm must have vigrous motility.
A. 50. B. 40 C. 70 D. 90
Answer : B Explanation
26. Spermatogonia - Mitosis - primary Spermatocytes - A - Secondary Spermatocytes - B - Spermatids - Spermatozoa.
Identify the word in place of A and B
A. Mitosis and Mitosis
B. Mitosis and Meiosis
C. Meiosis and Mitosis
D. Meiosis and Meiosis
Answer : D Explanation
Comments
Post a Comment