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प्रश्न
Mention various adaptations for wind pollination.
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उत्तर
Adaptations in anemophilous flowers:
- The flowers are small, inconspicuous, colourless, without nectar and fragrance (odour).
- The pollen grains are light in weight, dry and produced in large numbers to increase chances of pollination considering wastage of pollen grains.
- Stigma is feathery to trap pollens carried by wind currents.
- Stamens are exserted with long filaments and versatile anthers.
- Stamens and stigmas are exposed to air currents.
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संबंधित प्रश्न
Lever mechanism of pollination is observed in
- Salvia
- Jasmine
- Bougainvillea
- Butea
The transfer of pollen grains from the anther to the stigma of the same or of another flower of the same kind is known as ______.
State four features of flowers pollinated by insects.
Differentiate between geitonogamy and xenogamy (allogamy).
Answer the following question.
Write the difference in the characteristics of the progeny produced as a result of the two processes.
Coelacanth was caught in South Africa. State the significance of the discovery of Coelacanth in the evolutionary history of vertebrates.
What are the adaptations which are required in self-pollinated plants?
The flower which possesses both androecium and gynoecium is called perfect or ______.
Mention any one example of the hydrophilous flower.
Briefly discuss any two methods by which plants avoid self-pollination.
