Write notes with 2 to 3 important points : Outbreeding devices

Explanation

Flowering plants have developed many outbreeding devices in order to encourage cross-pollination. These devices are
(i) Dichogamy (maturation of male and female sex organs at different times in bisexual flowers).
(ii) Dicliny (presence of only one kind of essential whorl in a flower).
(iii) Herkogamy (presence of a mechanical barrier between the compatible pollen and stigma).
(iv) Self-incompatibility (due to the presence of self-sterile genes, it is unable to bring out fertilisation when pollen from same flower comes on the stigma).