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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