Across
- 1. mouth down
- 3. this unit
- 5. line chamber of sponges
- 8. this class
- 9. mouth up
- 12. flat sponge cells
- 13. what this is
- 15. a cell in tentacles
- 16. developing buds
- 17. breaking
- 18. network of nerves
Down
- 1. metazoan division
- 2. organ of digestion
- 4. fixed
- 5. defines the phylum cnidaria
- 6. creator of this
- 7. zoology teacher
- 10. straining to eat
- 11. amoebiod cells
- 14. small sharp pointed