| A | B |
| trait | a characteristic or physical feature of an animal |
| photosynthesis | the process in which plants make their own food |
| vertebrates | animal with a backbone |
| chloroplast | part of a plant cell that traps energy in sunlight for making food |
| genus | a group of similar, closely related animals |
| cell | the building block of life |
| species | the second part of a scientific name |
| nucleus | the control center of a cell |
| invertebrates | an animal without a backbone |
| cytoplasm | a gel-like liquid inside a cell membrane |
| adaptation | a physical feature that helps an animal get food, move, and protect itself |