CBSE Class 10 Answered
Leaves of 'CuiMui' plant begin to fold up and droop in response to stimulus. Name the stimulus and write the cause for such a rapid movement. Is there any growth involved in the movement?
Asked by rashmij34 | 04 Mar, 2024, 12:04: PM
Expert Answer
- Leaves of 'chhui-mui' or Mimosa pudica plant are sensitive to touch.
- When the stimulus in the form of touch reaches the base of the leaf, the water in the vacuoles of the leaf cells loses water to the adjacent cell.
- All the water escapes the leaf which then becomes flaccid. This causes the leaves to close.
- This is due to the passing of impulse, which causes turgor pressure change.
- Owing to this stimulus, the turgor of the lower half of the pulvinus is lost, and the leaf droops down.
- Such a movement is called seismonasty, a type of nastic movement. Here, growth is not involved.
Answered by Sheetal Kolte | 04 Mar, 2024, 12:19: PM
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