Q. No.Only one set of chromosomes will be present in:
| 1. | Spermatogonia | 2. | Zygote |
| 3. | Secondary oocyte | 4. | Oogonia |
Subtopic: oogenesis |
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Level 1: 80%+
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What is/are key difference(s) between spermatogenesis and oogenesis?
| I: | Spermatogenesis produces four viable sperm, while oogenesis results in one ovum and polar bodies. |
| II: | Spermatogenesis occurs throughout life since birth, whereas oogenesis is completed before birth. |
| 1. | Only I | 2. | Only II |
| 3. | Both I and II | 4. | Neither I nor II |
Subtopic: Seminiferous Tubules & Spermatogenesis | Spermiogenesis/Sperm Structure/Hormonal Regulation | oogenesis |
Level 3: 35%-60%
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Subtopic: oogenesis |
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Level 1: 80%+
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In humans, the process of spermatogenesis in males and oogenesis in females are similar in:
| 1. | Age at which the processes begin |
| 2. | The number of resultant haploid cells |
| 3. | Cytokinesis |
| 4. | Occurring in respective primary sex organs |
Subtopic: Spermiogenesis/Sperm Structure/Hormonal Regulation | oogenesis |
73%
Level 2: 60%+
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During oogenesis, a polar body is formed:
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
| I: | before fertilization. |
| II: | after fertilization. |
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
Subtopic: oogenesis |
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Level 3: 35%-60%
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What is the role played by the tiny polar bodies formed during oogenesis?
| 1. | They act as reserve eggs for fertilization. |
| 2. | They provide nutrition to the ovum. |
| 3. | They act as dumping grounds for additional genetic material. |
| 4. | They form the placenta. |
Subtopic: oogenesis |
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Level 2: 60%+
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Which of the following statements about oogenesis in humans is incorrect?
| 1. | Oogenesis begins before birth with the formation of primary oocytes during fetal development. |
| 2. | A secondary oocyte is released during ovulation, and meiosis II is completed after fertilization. |
| 3. | All primary oocytes continue meiosis I during puberty, resulting in the formation of secondary oocytes. |
| 4. | The first meiotic division is begun prior to birth, resulting in the formation of primary oocytes that remain arrested in prophase I until puberty. |
Subtopic: oogenesis |
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Level 3: 35%-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: | No more oogonia are formed and added after birth. |
| Statement II: | A large number of follicles degenerate during the phase from birth to puberty. |
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: oogenesis |
93%
Level 1: 80%+
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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 |
Subtopic: oogenesis |
87%
Level 1: 80%+
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What is the usual number of primary follicles in both ovaries of a female at puberty?
| 1. | 60000 – 80000 | 2. | 120000 – 160000 |
| 3. | 1 million to 2 million | 4. | About 7 million |
Subtopic: oogenesis |
Level 3: 35%-60%
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