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Geotropisms Geotrophic Grow Shoots Negatively Light Roots Positively

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  • shoots negatively geotrophic so grow up to light, and roots positively geotrophic so grow down into soil
  • Practical investigations into geotropisms
    • plants grown on a clinostat (rotating drum) so gravitational stimulus applied evenly to all sides of plant and the root, shoot grows straight in the dark

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