Across
- 2. how molluscs move
- 4. gastropods with shells are typically called ____
- 6. final larval stage
- 8. number of tentacles on an octopus
- 9. type of circulatory system
- 10. special cells that can change color
- 12. raspy tongue
- 13. portion of the mollusc that contains the digestive, respiratory and reproductive organs.
- 15. number of tentacles on a squid
- 16. squid, octopus and cuttlefish
- 17. how most molluscs get oxygen
- 20. type of symmetry
- 21. how snails and octopi chew throw shells
Down
- 1. move on their stomach
- 3. shells are made of this substance
- 5. helps move water through a bivalve, may be used for quick escape
- 7. body cavity containing circulatory fluid
- 11. first larval stage
- 14. gastropods without shells are typically called ___
- 18. clams, mussels and scallops
- 19. secretes a shell