Question

What is tropic or nastic movements ?

Answer 1

Tropic movements are the plant movements in which it grows towards the sunlight or opposite to gravity
Nastic movements in it grows opposite to sunlight or towards gravity

Answer 2

the movement that occur when we touch a touch me not plant is different from this if you touch any part of the plant the leaves droop downwards here the stimulus of touch doesnot influence the direction of movement such movement are called nastic movements