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  • Created by: Sarah
  • Created on: 21-01-13 15:53
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  • Photosynthesis
    • Produces food for plant
      • Food is glucose
    • Happens in chloroplasts
      • Contains chlorophyll
        • absorb sunlight and uses energy to convert CO2 and H2O into glucose
          • Oxygen produced as by-product
    • Happens in leaves of green plants
      • Main purpose of leaves
      • CO2 diffuses into the air spaces in a leaf
      • Untitled
      • Underneath of leaf is an exchange surface
        • Diffuses through Stomata
          • Oxygen and Water Vapor diffuse out through Stomata
    • The glucose produced in photosynthesis may be converted into insoluble starch for storage. Plant cells use some of the glucose produced during photosynthesis for respiration.
      • Some glucose in plants and algae is used:? to produce fat or oil for storage? to produce cellulose, which strengthensthe cell wall? to produce proteins.
      • To produce proteins, plants also use nitrate ions thatare absorbed from the soil.
    • Things need for photosynthesis
    • Carbon Dioxide + Water =(light energy)= Glucose + Oxygen
    • Rate of Photosynthesis - Limiting Factors
      • Light Intensity
        • L.F at night
      • Volume of CO2
        • If Light and Temp are okay then CO2 must be L.F
      • Tempertaure
        • L.F in winter
      • Limiting Factor anything that stops it happening faster
    • Untitled
  • Water reach cells via Xylem
    • Things need for photosynthesis


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