Pollination is when pollen grains from an anther, the male portion of a flower, are transferred to a female part in the flower, known as the stigma. 
types are
1)Self-pollination is the more basic type of pollination because it only involves one flower. 
2)Cross-pollination is a more complex type of pollination that involves the transfer of pollen from the anther of one flower to the stigma of a different flower. 
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The transfer of pollen grains from anther to stigma is called Pollination.There are two types of pollination.They are :
Self Pollination : When the pollen grains from the anther of a flower are transferred to the stigma of same flower.
Cross Pollination : When the pollen grains from the anther of a flower on one plant are transformed to the stigma of a flower on another similar plant