| A | B |
|---|
| node | a region where a leaf attaches |
| veins | conduct water and sugar |
| petiole | occurs between the node and the blade of a leaf |
| cellulose | major component of plant cell walls |
| xylem | carries water up from roots |
| phloem | carries a sugar solution down from leaves |
| epidermis | outermost tissue of leaves |
| blade | flat surface of a leaf |
| protozoa (review) | unicellular organism with a nucleus |
| decomposer (review) | breaks down organic matter |
