| A | B |
|---|
| mollusks | soft-bodied invertebrates that usually have shells |
| apppendages | structures that grow from the body |
| crop | sac used for temporary food storage in earthworm |
| gizzard | muscular structure that grinds soil |
| arthropods | invertebrates with jointed appendages |
| exoskeleton | outer covering made of chitin |
| molting | shedding of the exoskeleton |
| metamorphosis | changes some animals go through to become adults |
| echinoderms | spiny-skinned invertebrates living on the ocean bottom |
| tube feet | appendages that act like suction cups |
