| A | B |
|---|
| annual | plants that die after one season |
| biennial | plants that die after two years |
| perennial | plants that live for more than two yrs. |
| herbaceous | plants w/little or no woody tissue |
| sapwood | what xylem is called |
| heartwood | gives strength to support a tree |
| annual ring | rings on a tree that signify its age |
| root cap | protects the root |
| hormone | organism that helps another part of it |
| target organ | part of organism affected by hormones |
