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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
Geitonogamous flowering plants are genetically autogamous but functionally cross-pollinated. Justify.
Describe the characteristic features of wind pollinated flowers.
Make a list of any three outbreeding devices that flowering plants have developed and explain how they help to encourage cross-pollination.
Why angiosperm anthers are called dithecous?
Coelacanth was caught in South Africa. State the significance of the discovery of Coelacanth in the evolutionary history of vertebrates.
Give an account of various abiotic agencies used in pollination along with their adaptations for pollination.
Anemophily type of pollination is found in ______.
What are the major abiotic factors that influence habitat?
Complete the following table:
| Sr. | Type of pollination | Agent | Kind of flower | Examples |
| (i) | ______ | Wind | ______ | Maize |
| (ii) | Chiropterophily | ______ | Dull colour, with strong fragrance, abundant nectar | Adansonia |
| (iii) | Entamophily | Insects | ______ | Rose/Jasmine |
| (iv) | Ornithophily | ______ | Brightly coloured, large and showy. They secrete profuse, dilute n ectar | ______ |
Bird pollinated flowers are usually ______.
