| A | B |
|---|
| Epidermis | protect the leaf against h20 loss, injury + disease |
| Cuticle | wax, protective covering/prevents h2o loss: waxy part |
| Stomates | openings in the lower epidermis, allow exchange of gases between external + internal environment |
| Guard Cells | regulate the size of the stomate therefore allowing for the required exchange of O2 or CO2 depending on the needs of the plant |
| Palisade mesophyll cells | contain many chloroplasts therefore most photosynthesis occurs here |
| Spongy mesophyll cells | contain many airspace's for gas exchange and circulation of gases and H2O some photosynthesis occurs here |
| Chloroplasts | found in guard cells, palisade and spongy cells, used for photosynthesis |
| Veins | contain conducting tissue to transport materials around the leaf |
| Xylem | brings water to and from the cells of plants |
| Phloem | brings food + nutrients to and from, plant cells |
