Gastropods & Bivalves

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Across
  1. 3. tube that takes in water or lets water out
  2. 5. each 360 degree revolution of shell
  3. 6. used for movement
  4. 10. taking in water and filtering food out
  5. 12. means head-foot and includes squid and octopus
  6. 13. opening of the shell
  7. 15. tube that mouth and radula are found in
  8. 16. where gas exchange occurs
Down
  1. 1. means stomach-foot and includes snails and slugs
  2. 2. lining of the shell and protects the internal organs
  3. 4. holds the shells together in bivalves
  4. 7. tongue like structure with teeth for getting food
  5. 8. means two shells and includes clams and mussels
  6. 9. acts as a door when snail retracts inside its shell
  7. 11. whorls above the body whorl
  8. 14. bring the food to the mouth in bivalves