1. | To protect seeds | 2. | To attract insects |
3. | To trap pollen grains | 4. | To disperse pollen grains |
1. | Synergids, antipodals and Polar nuclei |
2. | Synergids, Primary endosperm nucleus and zygote |
3. | Antipodals, synergids, and primary endosperm nucleus |
4. | Synergids, Zygote and Primary endosperm nucleus |
1. | wind pollinated plants | 2. | insect pollinated plants |
3. | bird pollinated plants | 4. | bat pollinated plants |
1. | Geitonogamy | 2. | Xenogamy |
3. | Autogamy | 4. | Cliestogamy |
1. | 3 successive free nuclear divisions in functional megaspore. |
2. | Degeneration of 3 megaspores |
3. | Meiotic division in megaspore mother cell |
4. | Migration of 3 nuclei towards each pole. |
5. | Formation of wall resulting in seven celled embryosac. |
1. | (A), (B), (C), (D), (E) | 2. | (C), (E), (A), (D), (B) |
3. | (B), (C), (A), (D), (E) | 4. | (C), (B), (A), (D), (E) |
1. | Moths and butterflies are the most dominant pollinating agents among insects |
2. | Pollination by water is quite rare in flowering plants |
3. | Pollination by wind is more common amongst abiotic pollination |
4. | Flowers produce foul odours to attract flies and beetles to get pollinated |
Given below are two statements:
Statement I: | Cleistogamous flowers are invariably autogamous. |
Statement II: | Cleistogamy is disadvantageous as there is no chance for cross pollination. |
In the light of the above statements, choose the correct answer from the options given below:
1. I is incorrect but II is correct.
2. Both I and II are correct.
3. Both I and II are incorrect.
4. I is correct but II is incorrect.
Which part of the fruit, labelled in the given figure makes it a false fruit?
1. D-Seed
2. A-Mesocarp
3. B-Endocarp
4. C-Thalamus
What will be the ploidy of endosperm of a seed produced after crossing tetraploid female plant with tetraploid male plant?
1. Pentaploid
2. Hexaploid
3. Diploid
4. Triploid