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Question

One of the following is not caused by the growth related movement of the concerned plant part. This is :
(a) phototropism
(b) photonasty
(c) thigmonasty
(d) thigmotropism


Solution

(c) thigmonasty

The rolling up of plant leaves on touching is a thigmonastic movement and it is not related to growth.

Science
Lakhmir Biology 2013
Standard X

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