stimulus - causes a reaction in an organism, response - activity in an organism caused by a stimulus, growth regulator - chemical that controls the growth of a plant e.g. auxin, growth inhibitor - slow down growth, phototropism - growth response of a plant to light, geotropism - growth response of a plant to gravity, hydrotropism - growth response of a plant to water, thigmotropism - growth response of a plant to touch, chemotropism - growth response of a plant to chemicals,

LC Biology - Plant Responses

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