Advertisements
Advertisements
Question
Lever mechanism of pollination is observed in
- Salvia
- Jasmine
- Bougainvillea
- Butea
Solution
(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
RELATED QUESTIONS
Why do moss plants produce very large number of male gametes? Provide one reason. What are these gametes called?
Add a note on pollination mechanism in Salvia.
Name two characteristics of flowers in which pollination occur by wind.
Which one of the following is one of the characteristics of self-pollinated flowers?
Coelacanth was caught in South Africa. State the significance of the discovery of Coelacanth in the evolutionary history of vertebrates.
Autogamy can occur in a chasmogamous flower if ______.
Feathery stigma occurs in ______.
Heterostyly as a contrivance for cross-pollination is found in ______.
Advantage of cleistogamy is:
Briefly discuss any two methods by which plants avoid self-pollination.
