Pollination and Fertilization

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Pollination is the process of transference of pollen grains from the anther to the stigma. It is the first step that leads to the formation of fruit and seeds in flowering plants.

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The two kinds of pollination are self-pollination and cross-pollination.

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Self-pollination is the transfer of pollen from the anther to the stigma of the same flower, or to the stigma of another flower of the same plant. It includes autogamy and geitonogamy.

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Cross-pollination is the transfer of pollen from the anthers of flowers of one plant to the stigma of a flower of another plant of the same species. It is also called allogamy.

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Pollination must occur between plants of the same species because pollen of other species does not germinate properly. Only pollen of the same species survives and continues the process of reproductio…

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Autogamy is self-pollination in which pollen of the same flower falls on its own stigma. It is a direct form of self-pollination.

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Geitonogamy is the transfer of pollen from one flower to the stigma of another flower on the same plant. It is classified as self-pollination because both flowers belong to the same plant.

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Allogamy is pollination in which pollen of a flower of one plant reaches the stigma of a flower of another plant of the same species. It is cross-pollination.