The stimulus involved in the process of thigmotropism is
A
Water
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B
chemical
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C
light
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D
Touch
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Solution
The correct option is C Touch
Thigmotropism is the movement or change in orientation of a plant’s growth as a reaction to touch.
Thigmotropism is one example of tropism, which is the responding of a plant to environmental stimuli by growing towards or away from them. In other words, the reaction can be positive or negative. Hence, Touch is The stimulus involved in the process of thigmotropism