Leaf Structure
- Created by: Ellie Rivers
- Created on: 14-03-13 12:22
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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
- mesophyll
- 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
- they control the rate of GAS EXCHANGE
- 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
- thin flat shape
- tissues
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