Question

What is tropic and nastic movement ? explain its type and functions.

Answer 1

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Answer 2

NASTIC MOVEMENT :- the movement of a plant part in response to an external stimulus in which the direction of response is not determined by the direction of stimulus is called Nastic Movement .

TROPIC MOVEMENT :- growth movement of a plant part in response to an external stimulus in which the direction of stimulus determines the direction of response is called tropic movement .

TYPES OF TROPIC MOVEMENTS
1. phototropism
2. geotropism
3. chemotropism
4. hydrotropism
5. thigmotropism

TYPES OF NASTIC MOVEMENT
1. thigmonasty
2. photonasty

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