Across
- 3. the muscular appendage a mollusk uses to move
- 9. type of system sea stars use for locomotion and circulation
- 11. phylum of segmented worms
- 12. paired appendages on bristle worms
- 15. a mollusk with tentacles such as a squid or nautilus
- 18. class of echinoderms that includes sea stars
- 20. means of echinoderm locomotion
- 21. hair-like structures on annelids
Down
- 1. symmetry of annelids and most mollusks
- 2. annelid organ that grinds food
- 4. bony plate in sea star
- 5. phylum of some shelled animals like clams and snails
- 6. echinoderm symmetry
- 7. cucumber elongated echinoderm that swallows sand
- 8. class of mollusks that includes snails and slugs
- 10. phylum of spiny skinned invertebrates
- 13. a mollusk with two shells
- 14. thick layer on mollusks that secretes the shell
- 16. type of annelid circulatory system
- 17. rasping toothy tongue of mollusks
- 19. true body cavity