Question

Discuss various adaptations for self and cross-pollinations.

Answer 1

• When pollen reaches to the stigma of the same flower is self-pollination.
  

The adaptations appear in the self pollinated plants are Cleistogamy, Homogamy, Movement of floral parts, Incomplete dichogamy, safety mechanism.

• Cross-pollination is the transfer of pollen to stigma to another flowers of another plant same species.
  

The adatations appear in the cross pollinated plants are unisexuality, dichogamy, herkogamy, heterostyly, pollen prepotency, self sterilty.