Across
- 5. stinging cell
- 7. mouthpart of flatworms
- 8. sponge phylum
- 11. flatworm phylum
- 14. doesn't move around
- 15. sponge opening
- 17. type of roundworm digestive system
- 18. collar cell in sponges
- 20. cnidarian form with tentacles on bottom
Down
- 1. how sponges feed
- 2. number of tissue layers in cnidarians
- 3. cnidarian form with tentacles on top
- 4. jellyfish phylum
- 6. produces both eggs and sperm
- 9. whip-like tails on collar cells
- 10. type of free living flatworm found in ponds
- 12. roundworm phylum
- 13. where nematodes are found
- 16. type of parasitic flatworm that lives in livers
- 19. genus of small intestinal roundworms