Q. No.Consider the given two statements:
| Assertion (A): | Testes in males and ovaries in females are the primary sex organs. |
| Reason (R): | The primary sex organs are those that are located within the pelvic cavity and the secondary sex organs are the external genitalia. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A). |
| 2. | Both (A) and (R) are True but (R) does not correctly explain (A). |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Introduction | Seminiferous Tubules & Spermatogenesis | Spermiogenesis/Sperm Structure/Hormonal Regulation | Female Reproductive System-1 | Female Reproductive System-2 |
61%
Level 2: 60%+
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Each seminiferous tubule is lined on its inside by two types of cells:
| I: | male germ cells which undergo meiotic divisions finally leading to sperm formation |
| II: | Sertoli cells that secrete the androgens |
| 1. | Only I is correct | 2. | Only II is correct |
| 3. | Both I and II are correct | 4. | Both I and II are incorrect |
Subtopic: Basic Anatomy of Testis | Seminiferous Tubules & Spermatogenesis | Spermiogenesis/Sperm Structure/Hormonal Regulation |
71%
Level 2: 60%+
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How many of the given statements regarding the male sex accessory ducts are correct?
| I: | The male sex accessory ducts include rete testis, vasa efferentia, epididymis and vas deferens. |
| II: | The seminiferous tubules of the testis open into the vasa efferentia through rete testis. |
| III: | The vasa efferentia leave the testis and open into epididymis located along the posterior surface of each testis. |
| IV: | The epididymis leads to vas deferens that ascends to the abdomen and loops over the urinary bladder. |
| V: | Vas deferens receives a duct from seminal vesicle and opens into urethra as the ejaculatory duct. |
| VI: | Ejaculatory ducts store and transport the sperms from the testis to the outside through urethra. |
| VII: | The urethra originates from the urinary bladder and extends through the penis to its external opening called urethral meatus. |
| 1. | 4 | 2. | 5 |
| 3. | 6 | 4. | 7 |
Subtopic: Seminiferous Tubules & Spermatogenesis | Spermiogenesis/Sperm Structure/Hormonal Regulation | Male Reproductive Duct System |
66%
Level 2: 60%+
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Identify the paired structures:
| I: | seminal vesicle |
| II: | vas deferens |
| III: | bulbourethral gland |
| IV: | prostate gland |
| 1. | Only I, II and III | 2. | Only I, III and IV |
| 3. | Only II and III | 4. | I, II, III and IV |
Subtopic: Seminiferous Tubules & Spermatogenesis | Spermiogenesis/Sperm Structure/Hormonal Regulation | Male Reproductive Duct System |
85%
Level 1: 80%+
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Which of the following cells will have two sets of chromosomes?
a. Primary spermatocyte
b. Spermatogonia
c. First polar body
d. Second polar body
1. Only a and b
2. Only c and d
3. Only a and c
4. Only b and d
a. Primary spermatocyte
b. Spermatogonia
c. First polar body
d. Second polar body
1. Only a and b
2. Only c and d
3. Only a and c
4. Only b and d
Subtopic: Male Reproductive System | Basic Anatomy of Testis | Seminiferous Tubules & Spermatogenesis | Spermiogenesis/Sperm Structure/Hormonal Regulation |
85%
Level 1: 80%+
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How many of the given statements are true?
| A: | Spermatogonia have 46 chromosomes and always undergo meiotic cell division |
| B: | Primary spermatocytes divide by mitotic cell division |
| C: | Secondary spermatocytes have 23 chromosomes and undergo second meiotic division |
| D: | Spermatozoa are transformed into spermatids |
| 1. | 1 | 2. | 2 |
| 3. | 3 | 4. | 4 |
Subtopic: Seminiferous Tubules & Spermatogenesis | Spermiogenesis/Sperm Structure/Hormonal Regulation |
Level 3: 35%-60%
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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 |
Subtopic: Seminiferous Tubules & Spermatogenesis | Spermiogenesis/Sperm Structure/Hormonal Regulation |
84%
Level 1: 80%+
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Consider the given two statements:
1. Statement I is correct; Statement II is correct
2. Statement I is incorrect; Statement II is correct
3. Statement I is correct; Statement II is incorrect
4. Statement I is incorrect; Statement II is incorrect
| Statement I: | A primary spermatocyte completes the first meiotic division (reduction division) leading to formation of two equal, haploid cells called secondary spermatocytes, which have only 23 chromosomes each. |
| Statement II: | The secondary spermatocytes undergo the second meiotic division to produce four equal, haploid spermatids, which have 23 chromosomes each. |
2. Statement I is incorrect; Statement II is correct
3. Statement I is correct; Statement II is incorrect
4. Statement I is incorrect; Statement II is incorrect
Subtopic: Seminiferous Tubules & Spermatogenesis | Spermiogenesis/Sperm Structure/Hormonal Regulation | Male Reproductive Duct System |
85%
Level 1: 80%+
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Spermatogenesis starts at the age of puberty due to significant increase in the secretion of:
| 1. | LH by anterior pituitary | 2. | Inhibin by Sertoli cells |
| 3. | GnRH by hypothalamus | 4. | Androgens by Leydig cells |
Subtopic: Seminiferous Tubules & Spermatogenesis | Spermiogenesis/Sperm Structure/Hormonal Regulation |
74%
Level 2: 60%+
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Consider the given two statements:
1. Statement I is correct; Statement II is correct
2. Statement I is incorrect; Statement II is correct
3. Statement I is correct; Statement II is incorrect
4. Statement I is incorrect; Statement II is incorrect
| Statement I: | The spermatids are transformed into spermatozoa (sperms) by the process called spermiogenesis. |
| Statement II: | After spermiogenesis, sperm heads become embedded in the Sertoli cells, and are finally released into the seminiferous tubules by the process called spermiation. |
2. Statement I is incorrect; Statement II is correct
3. Statement I is correct; Statement II is incorrect
4. Statement I is incorrect; Statement II is incorrect
Subtopic: Seminiferous Tubules & Spermatogenesis | Spermiogenesis/Sperm Structure/Hormonal Regulation |
86%
Level 1: 80%+
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