| A | B |
|---|
| guard cell | one of two cells that border the stoma; can change shape |
| stomata | pore through which gases move in and out of a leaf |
| cuticle | prevents desiccation in plants |
| epidermis | top and bottom layers of a leaf;covered by cuticle |
| vascular bundle sheath | surrounds the veins (phloem and xylem);tighly packed cells |
| phloem | transports dissolved sugars |
| palisade | type of mesophyll that is rich in chloroplasts;below epidermis;photosynthesis occurs here |
| spongy mesophyll | type of mesophyll tha allows for oxygen and carbon dioxide to diffuse in and out of a leaf |
| xylem | transfers water and minerals from roots to leaves |
