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Standard IX
Biology
Autogamy
Discuss about...
Question
Discuss about self-pollination and cross-pollination.
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Solution
Self pollination
It is the transfer of pollen grains from another to stigma of same or similar flower.
Pollen grains are produced in small number.
An external agency is not required.
It does not produce variation.
There is a slow loss of vigor in self pollinated plants.
Cross pollination
It is the transfer of pollen grains from the anther of one flower to the stigma of another flower.
Pollen grains are produced in large number.
An external agency is required for carrying pollen grains form one flower to another.
It brings about a lot of variations.
Vigor of the plants is maintained.
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