| A | B |
| classify | grouping things that are alike |
| vascular | having vessels |
| nonvascular | without vessels |
| vascular tissue | supports plants and carries water and food |
| xylem | carries water and nutrients from roots to other parts |
| phloem | carries food from leaves to the rest of the plant |
| photosynthesis | the process that uses light energy, carbon dioxide, and water to make sugar |
| spore | a single reproductive cell that can grow into a new plant |
| gymnosperm | a plant that produces naked seeds |
| angiosperm | a flowering plant which has seed protected by a fruit |
| germinate | to sprout when conditions are right for growth |
| fossils | remains of once-living things that have been preserved by being petrified or leaving different imprints |
| extinction | when an entire living species dies |