Question

what is the difference between self pollination and cross pollination?

Answer 1

In self pollination the pollen grains are transfer from anther to stigma in same flowers but in cross pollination the pollen grains are transfer from another anther to stigma. .

Answer 2

Self pollination - in this pollination, the the pollen grain from Stamen transfer to the carpel of same plant or same flower, . in cross pollination, the transfer of pollen grain from Stamen to carpel of another flower of and plant which is similar to it