| Term | Definition |
| Angiosperm | flowering vascular plants that produce fruits |
| Cellulose | chemical compound made out of sugar.Provides structure and support in plants |
| cuticle | Waxy, protective layer that covers the stems, leaves, and flowers of many plants. Helps prevent water loss. |
| Gymnosperm | Vascular plants that do not flower. tttt Produce seeds that are not protected by fruit (ex. Conifers, pine cones) . |
| Monocot | Angiosperm (flowering plant) with one cotyledon inside its seed. |
| Nonvascular plant | Plant that absorbs water and other substances directly through its cell walls. |
| Rhizoid | Threadlike structures that anchor nonvascular plants to the ground. |
| Stomata | Tiny openings in a plant's epidermis through which carbon dioxide, water vapor, and oxygen enter and exit. |
| Vascular plant | Plant with tube-like structures that move minerals, water, and other substances throughout the plant. |
| Guard cell | Pairs of cells that surround stomata and control their opening and closing. |