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Question

Movement of plant part in response to touch is

A
Seismonasty
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B
Nutation
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C
Thigmonasty
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D
None of the above
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Solution

The correct option is C Thigmonasty
Movements of a plant or its parts in response to stimuli, irrespective of the direction of the stimuli are termed as nastic movements.

Thigmonasty is a type of nastic movement which takes place in response to touch.

For example, the tentacles of Drosera move when come in contact with the insect.

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