Plant hormones B: Auxin

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Plant hormones B: Auxin Explain the role of auxin in phototropism and geotropism Auxin and phototropism: C: Plants are affected by both positive and negative tropism. Add notes in the boxes to show which if the geotropism and phototropism is positive/negative. Shoots: Roots: Auxin and geotropism: D: Define the following terms. Key term Definition Positive tropism Negative tropism Phototropism Geotropism ………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………