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Question

What are tropic movements ? Briefly explain various types of tropic movements in plants.

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Solution

Like animals plants also shows movements. The movement of plant in the direction of stimulus is knows as tropic movement. Plants show two different types of movements, one is independent of growth and the other is dependent on growth.
The movement of a plant part in response to light is called phototropism
The movement of a plant part in response to gravity is called geotropism.
The movement of a plant part in response to chemicals is called chemotropism.
The movement of a plant part in response to water is called hydrotropism.
The directional movement of a plant part in response to touch of an object is called thigmotropism.


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