Biology

Differentiate between Self Pollination and Cross Pollination

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Sl. No.	Self Pollination	Cross Pollination
1.	It occurs within a flower or between two flowers of the same plant.	It occurs between two flowers of different plants of the same species.
2.	No external agent of pollination is required.	External agents such as wind, water, insects, birds and animals are required.
3.	Pollen grains are produced in small numbers, thus, no wastage of pollen grains occurs.	Pollen grains are usually produced in large numbers, thus wastage of pollen grains occurs.
4.	Flowers are usually not attractive.	Flowers are attractive with coloured petals.

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