XEROPHYTES

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  • XEROPHYTES
    • hairy leaves
      • reduce evaporation by leaf surface
      • trap water vapour
        • creates high water potential outside the stomata
    • stomata in pits
      • trap water vapour
        • creates high water potential outside the stomata
    • rolled leaves
      • reduce exposed SA for evaporation
    • High solute concentration
      • reduce water potential inside leaf cells
    • Thicker cuticle which is waterproof
      • reduces exposed surface area for evaporation
    • Small leaves or needles
      • reduces exposed surface area for evaporation
    • fewer stomata
      • reduces diffusion of water vapour
    • stomata close during day
      • reduces diffusion of water vapour
    • Most stomata on lower surface
      • less exposure
    • More densely packed spongy mesophyll
      • smaller surface area for evaporation

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