Question

merits and demerites of self and cross pollination

Answer 1

self pollination ;it is a transfer of pollen grains from anther to stigma of same flowers.1. it occurs in closed flowers.2. it does not require external agent. 3. it does not help in producing new varities and species.                                               CROSS POLLINATION:the transfer of pollen grains from anther to stigma of another flowers in different plant .                                                                             1. it occurs in open flower.                                                                                   2.   it require external agent.                                                                                      3  it give rise to new varities and species