- 1(current)
Q. No.Type B spermatogonia divide to form:
| 1. | Type A spermatogonia. | 2. | spermatids. |
| 3. | a primary spermatocyte. | 4. | a secondary spermatocyte |
Chose the correct chronological order in which the following cells are produced:
| a. | primary spermatocytes | b. | secondary spermatocytes |
| c. | spermatids | d. | spermatogonia |
| e | sperm cells |
| 1. | a,b,c,d,e | 2. | b,a,c,e,d |
| 3. | c,a,b,d,e | 4. | d,a,b,c,e |
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Identify the cells that are haploid: (1) spermatogonia (2) primary spermatocytes (3) secondary spermatocytes (4) spermatids (5) spermatozoa
| 1. | 1, 2, and 3 | 2. | 2, 3, 4, and 5 |
| 2. | 3, 4, and 5 | 4. | 4 and 5 only |
Changes in GnRH pulse frequency in females is controlled by circulating levels of :
| 1. | estrogen and inhibin | 2. | progesterone only |
| 3. | progesterone and inhibin | 4. | estrogen and progesterone |
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| I: | acts at the Leydig cells and stimulates synthesis and secretion of androgens. |
| II: | acts on the Sertoli cells and stimulates secretion of some factors which help in the process of spermiogenesis. |
| 1. | Only I is correct | 2. | Only II is correct |
| 3. | Both I and II are correct | 4. | Both I and II are incorrect |
Consider the given two statements:
I. Secretion of androgen-binding protein (ABP) by Sertoli cells is very important for effective spermatogenesis.
II. Testosterone is required in large local concentrations to maintain the process.
1. Both I and II are correct and II explains I.
2. Both I and II are correct but II does not explain I.
3. Only I is correct.
4. Both I and II are incorrect
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Q. No.
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