Leaf Structure

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  • Leaf Structure
    • tissues
      • mesophyll
        • adapted for gaseous diffusion
      • palaside cells
        • carry out photosynthesis
      • UPPER EPIDERMIS
        • protects the leaf and allows GASEOUS EXCHANGE
      • pholoem
        • transport organic materials away form the leaf
      • xylem
        • transport water and ions to the  leaf
    • stomata
      • they control the rate of GAS EXCHANGE
        • plants have to balance gas exchange with WATER LOSS
      • each stomata is surrounded by a pair of GUARD CELLS
        • GUARD CELLS are special cells
        • the GUARD CELLS can open and close the STOMATAL PORE
      • stomata are CLOSED when water loss is excessive
      • miunte pores on the UNDERSIDE of the leaf
    • short fast DIFFUSION PATHWAY
    • large SURFACE AREA TO VOLUME RATIO
    • gases move in and out of the plant by DIFFUSION
    • adaptions for rapid DIFFUSION
      • thin flat shape
        • large SURFACE AREA
      • numerous STOMATA
        • in the LOWER EPIDERMIS
      • numerous air spaces

Comments

TayaMairead

Very useful! especially for the tissues within the leaf! thanks :)

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