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प्रश्न
Answer the following question.
Express the process of pollination in Vallisneria.
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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
With the help of a suitable example, explain protandry.
Name two characteristics of flowers in which pollination occur by wind.
Find the odd-one out, giving reason:
Ovary, style, pollen grain, stigma
Name of the parts of the ovary which give rise to:
Fruit wall ______
Give one word/term for the following:
Pollination of flowers by insects.
In bisexual flowers, maturation of gynoecium before androecium is known as ______.
Describe pollination. How many types of pollinations are found?
Very short answer type question:
What is hydrophily?
Explain water pollination in detail with its types.
Give any four floral adaptations for chiropterophily.
