Question

Give a concise account of the steps involved in the fertilization of an angiosperm plant.

Answer 1

Steps involved in fertilization of angiospermic plant:

1. Germination of pollen grain on stigma.
2. Formation of pollen tube in stigma.
3. Growth of pollen tube inside the style.
4. The direction of the pollen tube towards the micropyle of the ovule.
5. Entry of pollen tube into the synergid of embryo sac.
6. Discharge of male gametes from the pollen tube.
7. Fusion of male gamete with egg cell (syngamy)
8. Fusion of second male gamete with polar nuclei (triple fusion/double)