Question

What are nastic and curvature movements? Give one example of each.

Answer 1

Nastic Movements: They are non-directional movements that show response towards stimuli like light, temperature, humidity. The direction of nastic movements is independent of the direction of the stimulus, for example, Opening and closing of flowers (photonic response).

Curvature Movements:They include curving or bending of a plant in response to any stimuli, for example, Curving of the stem tip towards the light (due to auxin).