Question

Different between tropic of and mastic movement

Answer 1

Answer:

→ Nastic movements are non directional responses to stimuli such as temperature and heat.

→ The most important feature of this type of movement is that movements are not governed by the direction of the stimulus.

→ They may be induced by touch (seismonastic), temperature (Thermonastic), light, and chemicals.

→ Whatever be the direction of stimulus, the movements always occur in a particular direction without reference to the direction of the stimulus

→ Example of seismonastic movement is movement of Venus fly trap.

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→ Tropic movement is the response to stimuli that comes from one direction.

→ It is a directional movement.

→ If the movement of the plant part is towards the stimulus, then it is known as positive tropism . If the movement of the plant part is away from the stimulus, then it is known as negative tropism .

→ For example phototropism, Geotropism etc.

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Explanation:

Answer 2

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