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Tropism and nastic movements in plants explained.
Tropism is a growth movement in plants where the direction is determined by the direction of the stimulus. There are two types: positive tropism (growing toward the stimulus) and negative tropism (growing away from the stimulus).
Nastic movements are non-directional plant responses to stimuli like light or temperature. An example is Nyctinasty, where plants open or close their leaves based on the day-night cycle.
By observing the plant receiving sun for hours with closed petals, you can differentiate between the two by noting if the response is directional (tropism) or non-directional (nastic response).
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