- 1(current)
Q. No.What ensures that only one sperm can fertilize the ovum?
| 1. | Corona Radiata | 2. | Ground substance around ovum |
| 3. | Zona pellucida | 4. | Acrosome |
Subtopic: Â Fertilization |
 81%
From NCERT
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What happens when a sperm enters the cytoplasm of the secondary oocyte?
1. Release of first polar body
2. Completion of meiosis II
3. Degeneration of polar bodies
4. Dissolution of zona pellucida
Subtopic: Â Fertilization |
 85%
From NCERT
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In humans, the sex of the baby is determined:
| 1. | At the time of fertilization and by the father |
| 2. | At the time of fertilization and by the mother |
| 3. | At the time of implantation and by the father |
| 4. | At the time of implantation and by the mother |
Subtopic: Â Fertilization |
 92%
From NCERT
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Q. No.
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