Question

difference between self and cross pollination

Answer 1

self: Transfer of pollen grains from anther of a flower to the stigma of the same flower of a plant is called self pollination.

cross : The transfer of pollen grains from anther of a flower to the stigma of another flower on the same plant or another plant
is called cross pollination.

Answer 2

Self pollination is the process of transferring the pollens from anther to stigma in the same flower.
Cross pollination is the transfer of pollen grains from the anther of a flower to the stigma of another flower in a different plant of same or different species.