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What is tropic moment |
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Answer» The bending or movement of a part of plant in response to the external stimulus is called tropism or tropical movement. It is of following types :\tPhototropism: It is a response to light. It may be towards light (positive) or away from the light (negative).\tGeotropism: It is a response to gravity-. It may be towards stimulus (positive) and away from the stimulus (negative).\tChemotropism: Response to chemicals. It may be positive or negative.\tHydrotro pism: Response to water. It may be positive or negative. Movement related to stimulus i.e plant body either move towards stimulus or away from stimulus |
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