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What guides the entry of the pollen tube though the micropyle into the embryo sac in the angiosperms?
| 1. | Antipodals | 2. | Filiform apparatus in synergids |
| 3. | The egg cell | 4. | Polar nuclei |
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Cellular thickenings called filiform apparatus are seen in:
| 1. | Antipodals | 2. | Synergids |
| 3. | Egg cell | 4. | Central cell |
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| A | B | C | D | |
| 1. | Synergid | Polar nuclei | Male gamete | Antipodal |
| 2. | Synergid | PEN | Male gamete | Antipodal |
| 3. | Antipodal | Polar nuclei | Egg cell | Synergid |
| 4. | Antipodal | PEN | Egg cell | Synergid |
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| Statement I: | I shows the entry of the pollen tube into a synergid under the guidance of A. |
| Statement II: | II shows the discharge of male gametes into a synergid. |
| 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 |
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While planning for an artificial hybridization programme involving dioecious plants, which of the following steps would not be relevant?
1. Bagging of the female flower
2. Dusting of pollen on the stigma
3. Emasculation
4. Collection of pollen
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