Transfer of pollen grain from the anther to the stigma of the carpel is called pollination.
Pollinations can occur either within a flower or between flowers of the same plant or flowers of different plants.
There are two kinds of pollination:
Self-pollination:This type of pollination occurs when pollen grains from the anther fall directly onto the stigma of the same flower.
Cross-pollination: It is a complex type of pollination that involves the transfer of pollen from the anther of one flower to the stigma of a different flower.