Why is the closing of a dandelion flower at dusk not a tropism?
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The closing of a dandelion flower at dusk (when it gets dark) is not a tropism because the direction of movement of petals of dandelion flower does not depend on the direction of stimulus (light). ... Its stimulus is light. (ii) Geotropism - The movement of a plant part in response to gravity is called geotropism.
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The closing of a dandelion flower at dusk ( when it gets dark ) is not a tropism because the direction of movement of petals of dandelion flower does not depend on the direction of stimulus light...
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