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Question

Movement due to external stimuli is known as

A
Autonomic movement
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B
Paratonic movement
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C
Amoeboid movement
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D
Excretory movement
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Solution

The correct option is C Paratonic movement
A movement exhibited by a plant or plant part in response to an external stimulus is called as paratonic movement. Autonomic movement is seen in aquatic plants and is spontaneous movement of protoplasm. Amoeboid movement is a crawling movement that occurs due to protrusion of cytoplasm. Excretory movement is movement due to excretion of substance by the plants.
Thus, the correct answer is option B.

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