what do you mean by cross pollination and self pollination?
Self pollination occurs on the same plant. Transfer of pollen from the anther to the stigma of the same flower and transfer of pollen from anther of a flower to stigma of a different flower on the same plant is categorized as self pollination.
In cross pollination, pollen is transferred from the anther of one flower of one plant to stigma of different flower of different plant.