Question

Differentiate self pollination and cross pollination.

Answer 1

Self-pollination: It is the transfer of pollen grain from anther to the stigma of the same flower or different flowers of the same plant.

Cross-pollination: It is the transfer of pollen grain from anther to the stigma of flowers of different plants.

Self-pollination	Cross-pollination
1. Takes place between flowers of the same plant or within a single flower.	Takes place between flowers of different plants.
2. Pollen grains are less wasted.	2. Pollen grains are more wasted.
3. Offspring are exact copies of their parents.	3. Offspring are not identical to their parents.
4. It has no role in evolution.	4. It plays an important role in evolution.