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प्रश्न
Describe pollination. How many types of pollinations are found?
उत्तर
Pollination is the transfer of pollen grains from the anther to the stigma of the same or another flower.
The male gametes are produced inside pollen grains located in the anthers of androecium whereas the female gametes are produced in the ovules located in the ovary of gynoecium. For forming a zygote, the male gametes need to be transferred to the gynoecium for fusing with the female gametes. This is achieved through pollination. Pollination occurs through insects, wind, or other agents.
There are two types of pollination - Self-pollination, and cross-pollination.
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संबंधित प्रश्न
Describe the structure of its microsporangium.
What is meant by pollination?
Compare the characteristic features of insect pollinated and wind pollinated flowers. Explain how the respective features assist in pollination.
Give one word/term for the following:
When stigma and anthers do not grow up to the same height, which favors only cross-pollination.
Mention any two contrivances in flowers which favour cross-pollination.
Differentiate between geitonogamy and xenogamy.
Put a tick mark (✓) against the correct alternative in the following statements
Vegetative propagation is not observed in:
Give an account of any two biotic agents for pollination along with their adaptations.
Even in absence of pollinating agents seed-setting is assured in ______.
Male and female flowers are present on different plants (dioecious) to ensure xenogamy, in ______.
