Question

Défference between Self Pollination
and cross Pollination​

Answer 1

in self pollination,pollen grains are transferred from another to stigma of the same flower or other flower on the same plant.

whereas in cross pollination pollen grains are transferred from another to stigma of a flower on another plant of the same kind .

Answer 2

Answer:

The cross-pollination is defined as the deposition of pollen grains from a flower to the stigma of another flower.

Self Pollination

In this process, the pollen grains transfer from the stigma of the same or genetically similar flower.

Explanation:

Self-Pollination Cross-Pollination

Transfer pollen grains from the anther to the stigma of the same flower. Transfer pollen grains from the anther to the stigma of a different flower.

This process can take place in the same flower or a different flower of the same plant. This process can take place between two flowers present on different plants.

It occurs in the flowers which are genetically identical. It occurs between flowers which are genetically different.

Few species that exhibit self-pollination – Paphiopedilum parishii, Arabidopsis thaliana Few species that exhibit cross-pollination – apples, daffodils, pumpkins and grasses

Causes homogenous conditions in progenies. Causes heterozygous condition in progenies.

Self-pollination increases genetic uniformity and decreases genetic variation. Cross-pollination decreases genetic uniformity and increases genetic variation.

Causes inbreeding. Causes outbreeding.

Reduces the gene pool. Maintains the gene pool.

Produces limited amounts of pollen grains. Produces large amounts of pollen grains.

In self-pollination, both the stigma and anther simultaneously mature In cross-pollination, both the stigma and anther mature at different times.