Question

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

Answer 1

Nastic movements are non-directional responses to stimuli (e.g. temperature, humidity, light irradiance), and are usually associated with plants. The movement can be due to changes in turgor or changes in growth (therefore K+ ion concentration usually controls such movementis plants).

(Sorry I don't know the meaning of 'Curvature Movements')

Answer 2

Give one example of each. Nastic Movements: They are non-directional movements which show response towards stimuli like light, temperature, humidity. ... Curvature Movements: They include curving or bending of a plant in response to any stimuli for example, Curving of the stem tip towards light (due to auxin)or,

when the movement take place in body part these are called curvature movement