1. Gossypium
2. Triticum
3. Brassia
4. Citrus
Transfer of pollen grains from the anther to the stigma of another flower of the same plant is called:
1. xenogamy
2. geitonogamy
3. karyogamy
4. autogamy
Wind pollinated flowers are:
1. | small, brightly coloured, producing large number of pollen grains |
2. | small, producing large number of dry pollen grains |
3. | large, producing abundant nectar and pollen |
4. | small, producing nectar and dry pollen |
1. autogamy, but not geitonogamy
2. Both geitonogamy and xenogamy
3. geitonogamy, but not xenogamy
4. autogamy and geitonogamy
1. | it helps in the entry of pollen tube into the synergid |
2. | it prevents the entry of more than one pollen tube into the embryo sac |
3. | it brings about the opening of the pollen tube |
4. | it guides the pollen tube from the synergid to the egg |
In a cereal grain, the single cotyledon of the embryo is represented by:
1. coleorhiza
2. scutellum
3. prophyll
4. coleoptiles
Persistent nucellus in the seed is known as:
1. | Tegmen | 2. | Chalaza |
3. | Perisperm | 4. | Hilum |