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Stimulus and Response

The growth mo...

Question

The growth movement of a plant part in response to the touch of an object is called :

A

thigmotropism

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B

thigmonasty

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C

geotropism

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D

hydrotropism

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Solution

The correct option is A thigmotropism
The directional growth movement of a plant part in response to the touch of an object is called thigmotropism.

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Q. Which of the following is not caused by a growth movement?
(a) bending of the shoot of a plant in response to light
(b) closing up of leaves of a sensitive plant on touching with an object
(c) climbing up of a plant on an object by using tendrils
(d) movement of the root of a plant towards a source of water

Q. The growth movement of a plant part in response to the touch of an object is called :
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Stimulus and Response

Standard X Biology

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