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प्रश्न
Lever mechanism of pollination is observed in
- Salvia
- Jasmine
- Bougainvillea
- Butea
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उत्तर
(a) Salvia
In Salvia, when an insect visits a flower, it pushes the lower sterile anther lobe due to which the upper fertile anther lobe bends down. The anther lobe comes in contact with the rear of the insect's body where the pollen grains get attached. When the same insect visits another flower with a mature gynoecium, the pollen grains are picked up by the receptive stigma. This process of pollination is called the lever mechanism.
APPEARS IN
संबंधित प्रश्न
Explain the post-pollination events leading to seed production in angiosperms.
Make a list of any three outbreeding devices that flowering plants have developed and explain how they help to encourage cross-pollination.
Complete the following chart and rewrite.
| Sr.No. | Agencies | type of pollination |
| 1 | Water | .................... |
| 2 | ........................... | Entomophily |
| 3 | Bat | .................... |
| 4 | ....................... | Ornithophily |
(Or)
Explain outbreeding devices in angiospermic plants.
Compare the characteristic features of insect pollinated and wind pollinated flowers. Explain how the respective features assist in pollination.
Put a tick mark (✓) against the correct alternative in the following statements
Vegetative propagation is not observed in:
Describe the Advantages and Disadvantages of self-pollination to the Plant.
Cleistogamous flowers are ______.
Anemophily type of pollination is found in ______.
Plants with ovaries having only one or a few ovules are generally pollinated by ______.
Insect pollinated flowers are ______.
