- 1(current)
Q. No.After leaving the testes, spermatozoa pass sequentially through the :
| 1. | seminiferous tubule, rete testis, efferent ductule, and epididymis |
| 2. | epididymis, ductus deferens, seminal vesicle, and ejaculatory duct |
| 3. | membranous urethra, prostatic urethra, and spongy urethra |
| 4. | epididymis, ductus deferens, ejaculatory duct, and urethra |
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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What is the advantage of the descent of testes in humans from the lower abdomen to the scrotum?
| 1. | Better thermo-regulation leading to effective spermatogenesis |
| 2. | Ease of transport of the sperms to the urethra |
| 3. | More storage space for sperms |
| 4. | A decrease in the risk of prostatic hypertrophy |
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Identify the correctly matched pair:
| 1. | cryptorchidism: failure of testes to descend into the scrotum |
| 2. | semen: largest contributor is prostate |
| 3. | puberty: stage of development before the reproductive organs become functional |
| 4. | primordial follicle: the first stage of meiosis for oogenesis |
In the hormonal regulation of the male reproductive system:
| 1. | Spermatogenesis starts due to a significant decrease in the secretion of GnRH |
| 2. | LH acts on Sertoli cells and stimulates the secretion of some factors required for effective spermiogenesis |
| 3. | FSH acts on Leydig cells and stimulates the synthesis and secretion of androgens |
| 4. | Androgens stimulate the process of spermatogenesis |
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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
Study the given diagram and select the correct statement:
| 1. | A – sperms are stored and get matured here |
| 2. | B – contribute an insignificant amount to seminal plasma |
| 3. | C – their secretions are acidic in nature |
| 4. | D – add fructose to the seminal plasma |
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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 |
- 1(current)
Q. No.
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