Name: Tropic and Nastic Movements
Uploaded: 2019-07-19
Duration: 5 min 50 s
Description: Tropic movement is the response to stimuli that comes from one direction. Nastic movements are non-directional responses to stimuli such as temperature and h...

Question

Differentiate between tropic and nastic plant movements.

Accepted Answer

p9

Tropic plant movements Nastic plant movements

1. Movements take place in a specific direction (unidirectional). 1. The movement does not depend on the direction of a stimulus.

Tropic plant movements Nastic plant movements

2. Tropic movements are permanent and irreversible. 2. Nastic movements are temporary and reversible.

Tropic plant movements Nastic plant movements

3. The response to the stimulus is slow. 3. The response to the stimulus is rapid.

Tropic plant movements Nastic plant movements

4. Movements are in the direction of stimulus or away from it. 4. Movements are neither in the direction of stimulus nor away from it.

Tropic plant movements Nastic plant movements

5. There are five types of tropic movements.
Examples –Phototropism, Geotropism, Hydrotropism, Thigmotropism, Chemo tropism.
5. There are two types of nastic movements.
Examples –Photo nasty, Hapnonasty.

Differentiate between tropic and nastic plant movements.

Important Questions on Chemical Coordination in Plants

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