Question

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What is Seismonastic Movement? Give at least two example of it.

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Answer 1

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Seismonastic movements are non growth movement in response to touch stimulus.

It is seen in parts like leaves.

Examples...

Mimosa Pudica, Neptunia, venus fly trap.

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Answer 2

• (a) Seismonastic movement are the various type of responses and movements which are shown by plants on receiving stimulus. The stimulus may be electrical, chemical, pressure, touch, heat, etc. The plant shows some kind of change in their structure and move away from the source of stimulus.

(b) There are many different types of movements shown by the plants.

• Phototropism is movements towards the light. The plant moves towards the source of sunlight.

• Geotropism is the movement towards the soil. This is the movement shown by roots towards the ground in search of water and minerals.

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