Question

What are nastic and curvature movement. Give one example of each. (5 ) points

Answer 1

Dear Student

Movement of the plants in response to am external stimulus is called nastic movement. The plant may grow towards or away from the stimulus. It is caused by differential turgor pressure or hormone build up in the plant parts exposed to the stimulus. Eg: Opening and closing of stomata.

Curvature movements is movement of plant parts in or other direction. Eg: Release of spores from sporangia.

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