Question

what is the difference between self pollination and cross pollination describe the process of double fertilisation in plants?

Answer 1

Self pollination take place between a same plant
Cross pollination take place between two plants of same species

Answer 2

The difference between self and cross pollination are-
Self pollination
1.Pollen grains are transferred from the anthers to the stigma of the same flower or flower on the same plant.
2.It can occur even in the closes flowers.
3.It is very economical for the plants.
4.It does not introduced any variations.
5.It never helps in the production of new varieties and species.
Cross pollination
1.Pollen grains from the anther of one flower are transferred to the stigma of another flower present on the different plant.
2.It can occur when flowers open.
3.Not economical as there is a lot of wastage in the production of numerous pool end,nectar,scent,colour etc.
4.It introduces variations in the offsprings.
5.It helps in the formation of new varities and species.