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प्रश्न
Describe any three adaptations in anemophilous flowers.
Give adaptations in anemophilous flowers.
Give any four adaptations of anemophilous flowers.
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उत्तर
- The flowers are small, inconspicuous, colourless, and without nectar and fragrance (odour).
- The pollen grains are light in weight, dry and produced in large numbers to increase chances of pollination considering the wastage of pollen grains.
- Stigma is feathery enough to trap pollen carried by wind currents.
- Stamens are exserted with long filaments and versatile anthers.
- Stamens and stigmas are exposed to air currents.
Notes
Students should refer to the answer according to their questions.
APPEARS IN
संबंधित प्रश्न
Explain the post-pollination events leading to seed production in angiosperms.
List the different types of pollination depending upon the source of pollen gain.
Give the floral adaptations for anemophily.
Differentiate between the following:
Self pollination and cross pollination.
In bisexual flowers, maturation of gynoecium before androecium is known as ______.
- Nucellus
- Antipodals
- Synergids
- Micropyle
Put a tick mark (✓) against the correct alternative in the following statements
Pollen is produced in the
A particular species of plant produces light, non-sticky pollen in large numbers and its stigmas are long and feathery. These modifications facilitate pollination by ______.
Chief pollinators of agricultural crops are ______.
Anemophily type of pollination is found in ______.
Both chasmogamous and cleistogamous flowers are present in ______.
During Hybridization process anther of the bisexual flower is removed before it dehisces is called ______.
Insect pollinated flowers are ______.
In the dioecious aquatic plant shown, identify the characteristics of the male flowers that reach the female flowers for pollination:
| Size of the flower | Colour of flower | The characteristic feature of pollen grain | |
| A | small | brightly coloured | Lightweight and non-sticky |
| B | large | colourless | large and sticky |
| C | small | white | small, covered with mucilage |
| D | large | colourless | non-sticky |
Which one of the following may require pollinators, but is genetically similar to autogamy?
The term used for transfer of pollen grains from anthers of one plant to stigma of a different plant which, during pollination, brings genetically different types of pollen grains to stigma, is ______
Autogamy can occur in a chasmogamous flower if ______.
From among the situations given below, choose the one that prevents both autogamy and geitonogamy.
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 | ______ |
When and why does a plant breeder employ the emasculation technique?
