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प्रश्न
Answer the following question.
Express the process of pollination in Vallisneria.
उत्तर
Vallisneria grows in freshwater and is pollinated by water. It is a type of pollination known as hydrophily. The female flowers reach the surface of the water by a long stalk while the pollen grains are released on the surface of the water. These are passively carried by water currents to reach the stigma of the female flowers. Pollen grains of such plants are covered by mucilage which protects them from wetting.
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संबंधित प्रश्न
What is meant by emasculation?
Fill in the blanks:
The two kinds of pollination are __________ and __________.
Compare the characteristic features of insect pollinated and wind pollinated flowers. Explain how the respective features assist in pollination.
Give four adaptations shown by flowers pollinated by wind.
Give an account of any two biotic agents for pollination along with their adaptations.
Pollination by water occurs in ______.
In some plants anther and stigma mature at the same time this condition is called ______.
Correct definition of pollination is ______
Mention any one example of the hydrophilous flower.
Name the following:
One plant each of Hypohydrophily and epihydrophily.
