Chemical Coordination in plants 0.0 / 5 ? BiologyCells, tissues and organsIGCSEEdexcel Created by: tsalomrobertsCreated on: 27-02-21 20:08 What is a tropism The growth response of a plant to a directional stimulus 1 of 9 What is a positive tropism Growth response is towards the direction of the stimulus. 2 of 9 What is a negative tropism Growth response is away from the direction of the stimulus 3 of 9 What is a phototropism Growth movement of a plant in response to a directional light stimulus 4 of 9 What is a geotropism Growth movement of a plant in response to the directional stimulus of gravity 5 of 9 What is a coleoptile A sheath protecting a young shoot tip in a grass or cereal 6 of 9 What do auxins do Control the growth of plants by promoting cell division and causing elongation in plant cells 7 of 9 Chemical response in roots Negative phototropism and positive geotropism. Auxins prevent growth 8 of 9 Chemical response in shoots Positive photoropism. Negative geotropism. Auxins promote growth 9 of 9
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