- 1(current)
Q. No.Identify the correct statement:
| 1. | GnRH stimulates the production of estrogen [in females] or testosterone [in males] directly |
| 2. | LH stimulates ovulation (female) or spermatogenesis (male) |
| 3. | FSH initiates and maintains the development of accessory sex organs (both sexes) |
| 4. | estrogen stimulates oogenesis (female only) |
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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
| Assertion (A): | hCG can also be used clinically to induce ovulation in the ovaries as well as testosterone production in the testes. |
| Reason (R): | hCG resembles FSH in function. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
Consider the given statements:
I. Primary oocyte begins meiosis I embryonic development, but gets arrested in the diplotene stage of prophase I until puberty.
II. Immediately after meiosis I, the haploid secondary oocyte initiates meiosis II but gets arrested at metaphase II stage until fertilization, if such should ever occur.
III. If the secondary oocyte is not fertilized it does not complete meiosis II and doesn't become an ovum.
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
I. Females produce hundreds of oocytes each month in comparison to the millions of sperm cells produced in the same age male.
II. The testes in the male and ovaries in the female can both be found in the pelvic cavity of an early fetus.
| 1. | Only I | 2. | Only II |
| 3. | Both I and II | 4. | Neither I nor II |
The hypothalamus and the pituitary gland mainly control the menstrual cycle. A series of physiological and anatomical processes of puberty culminates in menarche. Which of the following is the most important causal reason for the onset of puberty?
| 1. | The release of pulses of GnRH by the hypothalamus |
| 2. | The release of gonadotropins by the anterior pituitary |
| 3. | Inhibition of GnRH due to increase in circulating gonadotropins |
| 4. | Secretion of estrogen by the ovaries in response to pituitary hormones |
- 1(current)
Q. No.
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