| A | B |
|---|
| Nematoda | phylum name for roundworms |
| Nematodes | another name for roundworms |
| Cyst | a protective structure for developing worm larvae |
| Anus | an opening for feces to exit the body |
| Roundworm Examples | hookworms, pinworms, heartworms, etc. |
| Molluska | phylum name that means "soft body" |
| Mollusk Body Plan | mantle, foot, visceral mass, shell |
| Visceral Mass | the "guts" of a mollusk |
| Shell | a protective structure that mollusks have |
| Foot | helps a mollusk move |
| Gills | special organs that allow an animal to breathe in water environments |
| Open Circulatory System | a system where blood does not travel in blood vessels; the blood bathes the organs |
| Closed Circulatory System | system where the blood travels in blood vessels |
| Radula | a sharp structure (like a nail file) that mollusks use to feed |
| Gastropods (univalves) | mollusks with one shell; snails, slugs, conches |
| Bivalves | mollusks with two shells; oysters, clams, mussels, scallops |
| Cephalopods | means "head-foot"; includes the octopus, squid, cuttlefish |
