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प्रश्न
Compare the characteristic features of insect pollinated and wind pollinated flowers. Explain how the respective features assist in pollination.
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उत्तर
Characteristic feature of insect pollinated plant :
- Flowers are large, colourful, fragnant and rich in nectar to attract insect. If flowers are small then clustered into inflorescence.
- Pollengrains produced are sticky so that it easily sticks to insect body.
- Stigma is sticky so that pollen grains stuck on insect body transfer to stigma.
Wind Pollinated Flowers:
- Produces light, non-sticky or winged pollengrain so they can be transported in wind currents.
- Anthers are well exposed so that pollens can be easily carried by wind.
- Stigma is large and often feathery to easily trap the airborne pollen grain.
- Flowers are small and inconspicuous and often packed in to an inflorescence.
- Flowers have a single ovule in each ovary.
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संबंधित प्रश्न
Can cross-pollination occur in cleistogamous flowers? Give reasons for your answer.
Type of interaction where an individual sacrifices its own welfare (life) for the benefit of another animal of its own species is ______.
State four features of flowers pollinated by insects.
What is a flower? Draw a typical flower and label its different parts.
Explain water pollination in detail with its types.
Anemophily type of pollination is found in ______.
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 |
Autogamy can occur in a chasmogamous flower if ______.
Identify the set of correct statements:
- The flowers of Vallisneria are colourful and produce nectar.
- The flowers of waterlily are not pollinated by water.
- In most of water-pollinated species, the pollen grains are protected from wetting.
- Pollen grains of some hydrophytes are long and ribbon like.
- In some hydrophytes, the pollen grains are carried passively inside water.
Choose the correct answer from the options given below:
Bird pollinated flowers are usually ______.
