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प्रश्न-17 परागण से आप क्या समझते हैं? परागण के प्रकारों को समझाइये। What do you mean by Pollination ? Explain tynes of Poll |
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Answer» Answer: Pollination: Is defined as the deposition of pollen grains on the stigma of a flower from ANTHERS belonging to the same flower, same plant or a different plant. Pollination is of two types Self pollination - Stigma receiving pollen grains from the same flower Cross pollination - Stigma receiving pollen grains from a flower on the same plant or a different plant Wind and insects are two agents of pollination, called as Anemoplily and ENTOMOPHILY respectively Example of wind pollination - Grasses, Gymnosperms etc Example of insect pollination - ROSE, Euphorbia SPS etc Pollination and fertilization - Suitable pollination leads to compatible pollen grains being deposited on the stigma, leading to pollen tube development and fertilization. |
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