Question

what is pollination? what are the different methods of cross pollination? explain in detail

Answer 1

The transfer of pollen grain from Stigma to Anther is called pollination.
Different method are
By birds
By animals
By wind
Birds help in tranfering pollen grains as they stick in bird's leg when the birds sit on female flower fertilization takes place.

Answer 2

Transfer of pollen grains from anther to stigma is called as pollination.
It is of two types--
1. Self pollination-It is also called as the primary type of pollination as it includes just one flower. 
2. Cross pollination-- It is also called as complex type of pollination that allows the transfer of pollen grains from the anther of the flower into the stigma of another flower.
Methods of cross pollination are--
1.Pollination by wind
2.Artificial pollination
3.Pollination by animals