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प्रश्न
What are the different adaptations shown by bird-pollinated flowers?
उत्तर
Ornithophilous plants shows the following adaptations:
- Flowers are usually brightly coloured, large, and showy.
- They secrete profuse, dilute nectar.
- Pollen grains are sticky and spiny.
- Flowers are generally without fragrance, as birds have a poor sense of smell.
संबंधित प्रश्न
Explain the post-pollination events leading to seed production in angiosperms.
Enlist advantages and disadvantages of cross pollination
Add a note on pollination mechanism in Salvia.
Name of the part of the ovary which gives rise to:
Fruit ______
What is a flower? Draw a typical flower and label its different parts.
Give an account of any two biotic agents for pollination along with their adaptations.
Wind pollination is common in ______.
Male and female flowers are present on different plants (dioecious) to ensure xenogamy, 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 |
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 ______
