Exchange systems in plants

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  • Created by: NWILKA1
  • Created on: 29-05-14 14:44
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  • Exchange Systems in Plants
    • Carbon dioxide enters leaves by diffusion
      • Surface area of leaves is increased by their flattened shape and internal air space.
    • Most of the water and mineral ions are absorbed by the roots
      • Carbon dioxide enters leaves by diffusion
        • Surface area of leaves is increased by their flattened shape and internal air space.
      • Surface area of roots are increases by root hairs.
    • Stomata
      • To obtain carbon dioxide
      • Remove oxygen produced in photosynthesis
      • Size is controlled by guard cells, which surround them.
      • Close to prevent water loss if water is lost quicker than it's obtained.
        • Water loss
          • Lose vapour from their leaves
          • Most water loss takes place through stomata
            • Stomata
              • To obtain carbon dioxide
              • Remove oxygen produced in photosynthesis
              • Size is controlled by guard cells, which surround them.
              • Close to prevent water loss if water is lost quicker than it's obtained.
                • Water loss
                  • Lose vapour from their leaves
                  • Most water loss takes place through stomata
                    • Evaporation is quicker in hot, dry and windy conditions
            • Evaporation is quicker in hot, dry and windy conditions

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