| Questions | Answers |
|---|---|
| Hundreds or thousands of " " may line the tentacles of species of the phylum Cnidaria | Nematocyst |
| How many layers make up a Scyphozoans | Two |
| An unusual colonial hydrozoans? | Fire corals |
| Which type of Acoelomate animal lives in the digestive tract of vertebrates? | Tape worms |
| Between what two zones can you find the class anthozoa? | Littoral and Hadal zone |
| Inner layer of the scyphozoans | Gastrodermis |