| A | B |
| Filter Feeding | A way of getting food by straining it out of the water |
| Herbivore | An animal that eats only plants. |
| Carnivore | An animal that eats other animals. |
| Secrete | Form and release, or give off. |
| Enzyme | A substance that speeds up chemical changes. |
| Gastrovascular cavity | A digestive space with a single opening. |
| Digestive tract | A tubelike digestive space with an opening at each end. |
| Crop | The part of the digestive tract of some animals where food is stored. |
| Gizzard | The part of the digestive tract of some animals that grinds food. |
| Anus | The opening through which material that is not digested leaves the digestive tract. |