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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
Why angiosperm anthers are called dithecous?
Enlist advantages and disadvantages of cross pollination
Name two characteristics of flowers in which pollination occur by wind.
In bisexual flowers, maturation of gynoecium before androecium is known as ______.
What are the adaptations which are required in cross-pollinated
Mention various adaptations for wind pollination.
In some plants anther and stigma mature at the same time this condition is called ______.
Choose the correct statement from the following:
Describe any three adaptations in anemophilous flowers.
Name the pollinating agent of a flowering plant with large and coloured flowers with sticky stigma. State one characteristic feature of the pollen grains produced in such flowers.
