| A | B |
|---|
 | This is thin, flat and large to increase the rate of diffusion |
 | Potometer - measure how far the bubble moves! |
 | Increased surface area to absorb water faster |
 | Stomata |
 | Transpiration causes this |
 | guard cell |
| water and carbon dioxide and sunlight | Reactants of photosynthesis |
| Oxygen and glucose | Products of respiration |
| The main gas exchange in a leaf happens here | air spaces |
| Pailsade cells contain... | chloroplasts |
| Ions are absorbed by.... | active transport |
| Water is absorbed into roots by... | osmosis |
| Gases move in and out of the leaf by... | diffusion |
| Gases that diffuse in the leaf | water vapour, oxygen, carbon dioxide |
| A windy, hot and dry day.... | keeps concentration gradients high |
