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How is the movement of leaves of the sensitive plant different from the movement of a shoot towards light?
Thigmotropism
Sensitive plant leaves's movement is independent of growth and is touch-sensitive; this is known as thigmotropism.
Phototropism
Phototropism is the shoot's growth-related inclination towards light.
Thigmotropism | Phototropism |
---|---|
The sensitive plant’s movement is the nastic movement known as Thigmotropism. |
The tropical movement that causes the shoot to incline towards light is Phototropism. |
Exhibiting non-directional nastic motion with no particular path. |
Exhibiting unidirectional where the stimulus originates. |
Quick nastic motions | Extremely slow tropic motions |
Leaves and petals, a plant's flat parts convey motion. |
All plant sections exhibit these motions when the shoot gravitates towards light. |
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