Assertion (A): The spermatids are transformed into spermatozoa by the process called spermiation.
Reason (R): After spermiation, sperm heads become embedded in the Sertoli cells.
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.
Subtopic: Â Seminiferous Tubules & Spermatogenesis |Â Spermiogenesis/Sperm Structure/Hormonal Regulation |
 65%
From NCERT
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Assertion (A): In the absence of fertilization corpus luteum degenerates in 7 to 10 days
Reason (R): Degeneration of corpus luteum is due to non availability of FSH from anterior pituitary.
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.
Reason (R): Degeneration of corpus luteum is due to non availability of FSH from anterior pituitary.
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.
Subtopic: Â Menstrual Cycle: Luteal Phase |
 53%
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Spermatogenesis starts at the age of puberty due to a significant increase in the secretion of:
1. GnRH
2. FSH
3. LH
4. Testosterone
1. GnRH
2. FSH
3. LH
4. Testosterone
Subtopic: Â Seminiferous Tubules & Spermatogenesis |Â Spermiogenesis/Sperm Structure/Hormonal Regulation |
 76%
From NCERT
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The primary follicles in the ovary grow to become a fully mature Graafian follicle and simultaneously the endometrium of the uterus regenerates through proliferation during the:
| 1. | menstrual phase of the menstrual cycle |
| 2. | follicular phase of the menstrual cycle |
| 3. | ovulatory phase of the menstrual cycle |
| 4. | luteal phase of the menstrual cycle |
Subtopic: Â Menstrual Cycle: Pre Ovulatory Phase |
 83%
From NCERT
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Identify the incorrect statement:
| 1. | The seminiferous tubules of the testis open into the vasa efferentia through the rete testis. |
| 2. | The vasa efferentia leave the testis and open into the epididymis located along the posterior surface of each testis. |
| 3. | The epididymis leads to the vas deferens that ascend to the abdomen and loop over the urinary bladder. |
| 4. | The epididymis receives a duct from the seminal vesicle and opens into the urethra as the ejaculatory duct. |
Subtopic: Â Male Reproductive System |
 69%
From NCERT
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Each ejaculatory duct is formed by the union of:
| 1. | the vas deferens with the duct of the bulbourethral gland |
| 2. | the vas deferens with the duct of the seminal vesicle |
| 3. | the epididymis and the vas deferens |
| 4. | the duct of bulbourethral gland and the urethra |
Subtopic: Â Male Reproductive System |
 78%
From NCERT
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Essential for the maintenance of the endometrium, what hormone is secreted in large amounts by the corpus luteum in a non-pregnant female?
1. hCG
2. Progesterone
3. Estrogen
4. LH
1. hCG
2. Progesterone
3. Estrogen
4. LH
Subtopic: Â Menstrual Cycle: Luteal Phase |
 86%
From NCERT
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Regarding early embryonic development in humans:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | The first movements of the foetus and appearance of hair on the head are usually observed during the third month. |
| II: | By the end of about 24 weeks, the body is covered with fine hair, eye-lids separate, and eyelashes are formed. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Â Embryonic Development till Gastrulation |
 77%
From NCERT
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Chorionic villi are derived from:
1. Trophoblast cells
2. Granulosa cells
3. Theca cells
4. Maternal tissue
Subtopic: Â Embryonic Development till Gastrulation |
 85%
From NCERT
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A plasma membrane:
| 1. | envelops only the acrosome of sperm |
| 2. | envelops only the mid piece of sperm |
| 3. | envelops the whole body of sperm |
| 4. | does not envelop any part of the sperm at all |
Subtopic: Â Spermiogenesis/Sperm Structure/Hormonal Regulation |
 75%
From NCERT
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