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Question

How is the movement of leaves of the sensitive plant different from the movement of a shoot towards light?


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Solution

Thigmotropism

The movement of the sensitive plant's leaves is touch-sensitive and independent of growth, which is known as thigmotropism.

Phototropism

The growth-related tendency of the shoot toward light is known as phototropism.

ThigmotropismPhototropism
1.The movement of the sensitive plant's leaves is a nastic movement known as thigmotropism.1.Phototropism is a tropical movement that causes a shoot to gravitate towards light.
2. Plants typically exhibit non-directional nastic motions with no specific route.2.Tropical motions are unidirectional, depending on where the stimulus originates from.
3.Nastic motions are quick.3. Tropical motion is extremely slow.
4. These motions are conveyed by a plant's flat parts (such as leaves and petals). 4. All sections of a plant express these motions, as in the movement of a shoot toward the light rather than gravity.

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