Pollination is a process of transfer of pollen grains from an anther to the stigma of the same flower or of different flower. Pollination may be self pollination (or autogamy), i.e, (transfer of pollen grains from anther to the stigma of same flower) or cross pollination (or allogamy), i.e., transfer of pollen grains to the stigma of different flower:

Some agencies used in cross pollination are:

1.Insects (Entomophily)

2.Wind (Anemophily)

3.Water (Hydrophily)

4.Birds (Ornithophily)

5. Bats (Cheitropterophily).