Explanation:

1. self 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.

cross pollination

For cross-pollination to happen, the flower should be open.

No need for POLLINATORS to transfer pollen grains. Require pollinators to transfer pollen grains.

Pollen grains are transferred directly to a flower’s stigma.

Pollen grains are carried via wind, insects, animals, water, etc.

2. A fruit results from maturation of ONE or more flowers, and the gynoecium of the flower(s) forms all or part of the fruit. Inside the ovary/ovaries are one or more ovules where the megagametophyte contains the egg cell. After double fertilization, these ovules will become seeds.

3.Dispersal of seeds is very important for the survival of plant SPECIES. If plants GROW too closely together, they have to compete for light, water and nutrients from the soil. Seed dispersal allows plants to spread out from a wide area and avoid competing with one another for the same resources.