| A | B |
| nemotoda | phylum of worms |
| cyst | young worm with a protective covering |
| parasitic | this kind of members of the phylum Platyhelminthes |
| hosts | tapeworms attach to |
| salt water | where most flatworms live |
| Planarians | free living flatworms |
| cilia | planarians are covered with |
| dividing in two | reproduce asexually by |
| hermaphrodites | most planarians, exchange sperm with one another |
| segments | grows by producing these behind the head |
| male and female | each body segment of tapeworm has these kind of reproductive organs |
| fertilized eggs | when filled with these segment of tapeworm breaks off and passes out of host's body |
| heart worms | roundworms cause these in dogs |
| free swimming | many nematodes are parasitic but most are this |
| anus | wastes leave the body of roundworm by this opening |
| hook worms | humans can get these by walking barefoot over dirt |
| pork | this meat when undercooked can cause trichinosis |
| trichinella | kina of cysts that cause trichinosis |
| bilateral | kind of symmetry flatworms and roundworms have |