| A | B |
| Weeds | plants tha are undesirable and are often out of place |
| Annual Weed | A plant that completes its life cycle within one year |
| Biennial Weed | Will live for more than two years |
| Perenial Weeds | can live for more than two years |
| Stolon | a stem that runs on the surfaceand gives rise to new plants at each node |
| Entomophagous | insect that feed in other insects |
| Exoskeleton | the body wall of the insect |
| Metamorphosis | the growth process |
| Plant Disease | ant abnormal plant growth |
| Casual Agent | an organism that produces a disease |
| Fungi | plants that lack chlorophyll |
| Symptom | the visible change to the host caused by a disease |
| Quarantine | the isolation of pest infested material |
| Targeted Pest | is a pest that if introduced poses a major economic threat |
| Eradication | total removal or destruction of a pest |