1. | Amensalism | 2. | Anemophily |
3. | Floral reward | 4. | Commensalism |
1. | Nucellus | 2. | Integument |
3. | Chalaza | 4. | Hilum |
1. | Water pollinated flowers showing stamens with mucilaginous covering. |
2. | Cleistogamous flowers showing autogamy. |
3. | Compact inflorescence showing complete autogamy. |
4. | Wind pollinated plant inflorescence showing flowers with well exposed stamens. |
A: | The flowers of Vallisneria are colourful and produce nectar. |
B: | The flowers of waterlily are not pollinated by water. |
C: | In most of water-pollinated species, the pollen grains are protected from wetting. |
D: | Pollen grains of some hydrophytes are long and ribbon like. |
E: | In some hydrophytes, the pollen grains are carried passively inside water. |
A. | 3 successive free nuclear divisions in functional megaspore. |
B. | Degeneration of 3 megaspores |
C. | Meiotic division in megaspore mother cell |
D. | Migration of 3 nuclei towards each pole. |
E. | Formation of a 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. | Geitonogamy | 2. | Xenogamy |
3. | Autogamy | 4. | Cleistogamy |