| A | B |
| carbon dioxide | A gas breathed out by animals. |
| nutrients | Substances, such as minerals, that all living things need to grow. |
| photosynthesis | The process by which a plant makes its own food. |
| symmetry | The condition when an object can be divided into two parts that look the same. |
| transpiration | The giving off of water by plant parts. |
| taproot | One main root that goes deep into the soil. |
| fibrous roots | Long roots that grow near the surface. |
| germinate | To sprout. |
| spores | Tiny cells that ferns and fungi use to reproduce. |
| tubers | Swollen underground stems. |