define tropism phototropism geotropism hydrotropism with some examples and their positives and negatives
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Phototropism - It is the movement of a plant in response to light, they will grow towards the direction of the light. It may be positive (if towards the light) or negative phototropic (if away from the light). Geotropism - The movement of the plant in response to the gravity, they will move in the direction of gravity.
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Answer:An example of geotropism is the roots of a plant growing down into the ground. The growth of a plant toward a light stimulus is called phototropism - photo means light. Sunflower is a highly phototropic plant.
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