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

1.	What are nastic and curvature movement? Give one example of each.
Answer» Nastic Movement: They are non-directional curvature movements of turgor or growth when the movements are determined by the structure of the responding organ irrespective of the direction of structure which is generally diffused. e.g., Drooping and folding of leaves in a sensitive plant in response to shock (seismonasty). Curvature Movement: They are changes in orientation of some plant parts in relation to others caused by intrinsic or external stimuli, e.g., sleep movement or nyctinasty of legume leaves, bending of stem towards the light.

Answer»

Nastic Movement: They are non-directional curvature movements of turgor or growth when the movements are determined by the structure of the responding organ irrespective of the direction of structure which is generally diffused. e.g., Drooping and folding of leaves in a sensitive plant in response to shock (seismonasty).

Curvature Movement: They are changes in orientation of some plant parts in relation to others caused by intrinsic or external stimuli, e.g., sleep movement or nyctinasty of legume leaves, bending of stem towards the light.

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