Response of plants due to reversible turgor change in pulvinus as a result of touch is

Photonasty

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Thermonasty

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Seismonasty

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Chemonasty

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Solution

The correct option is C Seismonasty
Photonasty is the nastic movement shown by plant part in response to light. Thermonasty is the nastic movement shown by plant part in response to high temperature. Seismonasty is the nastic movement shown by plant part in response to touch. The response of plants due to reversible turgor change in pulvinus as a result of touch is due to seismonasty. Chemonasty is the nastic movement shown by plant part in response to the chemical.
Thus, the correct answer is option C.

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The growth movement of plants in response to touch/contact across a support is known as _________.

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