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Why is the folding up of the leaves of a sensitive plant on touching with a finger not a tropism?
The folding up of leaves in a sensitive plant on touching is not a tropism (like thigmotropism) because it is a non-directional movement, means the direction of movement of leaves does not depend on the direction of the stimulus (touch). Tropism is a directional movement where the direction of the movement of the plant part is towards the stimulus.
Updated on: 24-Mar-2023
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