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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.
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संबंधित प्रश्न
List the different types of pollination depending upon the source of pollen gain.
Differentiate between geitonogamy and xenogamy (allogamy).
Put a tick mark (✓) against the correct alternative in the following statements
Vegetative propagation is not observed in:
At which stage pollen grains are shed from the anther in Angiosperms?
Autogamy can occur in a chasmogamous flower if ______.
Which of the following pair has haploid structures?
Chief pollinators of agricultural crops are ______.
Both chasmogamous and cleistogamous flowers are present in ______.
Name the following:
One plant each of Hypohydrophily and epihydrophily.
Briefly discuss any two methods by which plants avoid self-pollination.
