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  • Created by: rht1
  • Created on: 19-03-16 16:00


Plants make their own food by a process called photosynthesis.

The plants take in carbon dioxide and turn it into sugar, releasing oxygen as a waste product.The process needs the energy from the sunlight (light energy) and this is then trapped by the green pigment in the leaves called chlorophyll. 

carbon dioxide + water ---(light energy)---> glucose + oxygen 

photosynthesis occurs mainly in the leaves 

cross section of leaf. Chloroplasts are found mainly in the palisade layer (palisade mesophyll) 


While leaves on different plants are slighlty different , in shape and size. All leaves are specially adapted for photosynthese in a number of ways:

  • A broad shape is used to help photosynthesis as it provides a large surface area in order to absorb light and CO2 
  • A Flat shape is used to help photosynthese as  it means the gasers dont have too far to diffuse.
  • By containing a network of veings it helps supply water from the roots as well as takiny away the products
  • The chloroplasts are


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