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PLANT RESPONSE (RESPONSE TO HERBIVORY (rapid growth - counteract the…

- - - - when light is shone from the side of the shoot - it distributes unevenly - diffuse down the dark side - causing the cells on this side to elongate more than another - bend towards light
      - high Auxin concentration will promote cell elongation
      - more stem area exposes to light - more efficient photosynthesis so grow quicker
    - - roots will always grow towards the Earth gravitational pull
      - high Auxin concentration will inhibit cell elongation
      - much in contactwith water and nutrients in the soil
  - - - Mimosa plant
      - when the leaf is touched - strong disturbance causes the entire leaves to droop from its base - leaves fold due to rapid loss of turgor pressure. The disturbance message is passed quickly around the plant by electrical signals
      - In carnivorous plants
      - some specialized plants trap and digest small animals or insects - obtain nitrogen - allows them to grow efficiently in a nutrient-poor environment
    - - spread leaves during the days to capture sunlgiht
      - during the night the leaves bend slightly - prevent dew from accumulating on the leaf and damage