Question

difference between tropic movements and nastic movements.(at least 4).​

Answer 1

the answer is written in this

Answer 2

Nastic movement

The movement of plants is neither towards nor away from the stimulus , it is called nastic movements.

They are the non directional movements

They dont depend on growth.

Example : Bending and drooping of 'touch-me-not' leaves on touching.

Tropic Movement

It is the movement of a plant in the direction of stimulus.

They are the directional movements .

They depend on growth .                                        
they are of 4 types -
   
a. Phototropism                
b. Geotropism
c. Chemotropism 
d. Hydrotropism

Examples : Downward movement of roots in response to gravitational force.