Plant growth

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Across
  1. 4. the organ that takes up water and nutrients from the soil
  2. 6. the location of photosynthesis
  3. 7. a plant response to light
  4. 9. an factor that causes a response
Down
  1. 1. a response to a stimulus
  2. 2. all tissues are made up of these
  3. 3. the process by which plants make food
  4. 5. a plant response to gravity
  5. 8. the plant hormone the acts on the dark side of the shoot