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Question

The leaves of mimosa pudica plant fold up quickly when touched with a hand. This is known as

A
Thigmonasty
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B
Thigmotropism
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C
Photonasty
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D
Phototropism
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Solution

The correct option is A Thigmonasty
Answer is option A i.e. "Thigmonasty"
Movement in the leaves of mimosa while you touch is called “nastic” movement. Nastic movements are reversible. It means that after some time plant leaf will comes to its original position. Thigmonasty is the nastic response of a plant to touch or vibration.

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