progeny

Self-pollination and its type

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Self-pollination is the transference of pollen grains from the anther of a flower to the stigma of either the same or genetically similar flower. It is generally not dependent on any external agency for pollination. It is of two types: 1.Autogamy It is the transfer of pollen grains from anther of a bisexual flower to … Read more

Variations and its types

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The differences that are found between the individuals of same species are called variation. It is very difficult to find out two individuals exactly similar in the nature. It may be harmful, useless and useful. Harmful or useless variations make individuals unfit for struggle for existence, whereas the useful variations are quite significant and make … Read more