| A | B |
|---|
| sponges | sacklike body, one large body opening |
| coelenterates | hollow body with tentacles |
| echinoderms | protective spines cover soft body |
| mollusks | soft bodies with large muscular foot, most have shells |
| worms | three groups, 1 or 2 openings, long or flat |
| arthropods | segmented, jointed legs, antennas, exoskeleton |
| antennae | insect feeler |
| regenerate | the regrowth of cells or parts of an organism |
| tentacles | used to catch food and pull it toward an animal's mouth |
| planarian | flatworm that is a scavenger |
| budding | beginning to grow |
| parasite | animal living on another |
| scavenger | to clean up after another, take what is left over |
| tapeworm | flatworm that is a parasite |
| roundworm | simple vertebrate who has 2 body openings |
| adapt | to change to suit the environment |
| habitat | the environment in which one lives |
