Differentiate between: tropic movement and nastic movement - Vidyadip

Question

Differentiate between:
tropic movement and nastic movement

✓

Answer

Tropic movement :

In these movements a plant part groves and moves either towards the stimulus or away from it.
The direction of response is dependent on the direction of the stimulus.
Phototropism, geotropism, hydrotropism, thigmot- ropism are tropic movements.

Nastic movement :

These movements occur in response to environmental stimuli
The direction of response is independent of the direction of stimulus.
Seismonastic movement, photonastic movement, nyctinastic movement are nastic movements.

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