Q. No.Leydig cells:
1.
Are present in seminiferous tubules and secrete androgens
2.
Are present in seminiferous tubules and help in the maturation of sperms
3.
Are present in interstitial space and secrete androgens
4.
Are present in interstitial space and help in the maturation of sperms
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The final mature follicle is called:
| 1. | Primordial follicle | 2. | Primary follicle |
| 3. | Vesicular follicle | 4. | Graafian follicle |
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Consider the following two statements:
| I: | The hymen is often torn during the first coitus. |
| II: | The presence or absence of hymen is a reliable indicator of virginity. |
Of the two statements:
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. I is correct but II is incorrect.
4. Both I and II are incorrect.
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The division of primary oocyte results in:
| 1. | unequal cells – a smaller haploid secondary oocyte and a larger diploid polar body |
| 2. | unequal cells – a larger haploid secondary oocyte and a smaller haploid polar body |
| 3. | unequal cells – a smaller diploid secondary oocyte and a larger haploid polar body |
| 4. | equal cells – a haploid secondary oocyte and a haploid polar body |
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Leydig cells synthesize androgens under the direct influence of:
| 1. | FSH | 2. | LH |
| 3. | FSH and LH | 4. | GnRH |
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For normal fertility, what percent of the sperm in ejaculate must exhibit normal morphology?
| 1. | 20 | 2. | 30 |
| 3. | 40 | 4. | 60 |
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What causes the onset of puberty in males?
| 1. | Increase in secretion of testosterone by the testis |
| 2. | Decrease in the secretion of testosterone by the testis |
| 3. | Increase in secretion of GnRH by the hypothalamus |
| 4. | Decrease in the secretion of GnRH by the hypothalamus |
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The correct sequence of mammalian mammary gland ducts beginning from the alveoli would be:
| 1. | Mammary tubules → Mammary ducts → Mammary ampulla → Lactiferous ducts |
| 2. | Lactiferous ducts → Mammary ducts → Mammary ampulla → Mammary tubules |
| 3. | Lactiferous ducts → Mammary ampulla → Mammary ducts → Mammary tubules |
| 4. | Mammary tubules → Mammary ampulla → Mammary ducts → Lactiferous ducts |
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