Zoology Crossword

1. any animals with brilliant colors and unusual shapes
6. flower-like stage
7. stinging structures located on the tentacles
8. can not move
10. located between the epidermis and gastroderm
11. an individual that has both male and female reproductive organs and produces both sperm and eggs
13. motile bell-shaped stage
14. body wall that surrounds an internal space
16. go through the same life-cycle stages as hydrozoans
17. corals produce skeletons made out of...

2. simple nervous systems
3. layer of cells that cover the outer surface of the cnidarian's body
4. cnidarians that spend most of their lives as polyps
5. layer of cells that covers the inner surface lining the gastrovascular cavity
9. countless coral colonies produce huge structures called
12. symmetry around a central axis
15. most beautiful and ecologically important invertebrates