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Ms. Bruno Mollusks Review Name________________________________________________ Marine Biology Date_______________ Per_________ Mollusks Quiz Review For questions 1-12, indicate if the statement applies to bivalves, gastropods, cephalopods, two out of the three, or all three classes. Write the letter of the corresponding class in the space provided. Bivalves = B Gastropods = G Cephalopods = C 1. Has a well-developed brain ____________________ 2. Covered by a mantle __________________________ 3. Only class that does not have a shell _________________ 4. Feeds primarily through filter feeding _________________ 5. Name means “stomach-footed” _____________________ 6. Only class that does NOT have a radula ___________________ 7. Name means “head-footed” ___________________________ 8. Examples include clams, mussels, oysters, and scallops _____________________ 9. Largest class of mollusks ________________________ 10. Examples include snails, sea slugs, and nudibranchs ________________ 11. Examples include the squid, octopus, cuttlefish, and nautilus __________________ 12. The mantle secretes a shell in these mollusks _________________ Mollusks (General): 13. What is the soft fleshy body that contains the internal organs of a mollusk? 14. What types of invertebrates are NOT considered mollusks? 15. What does the word mollusk literally mean? Bivalves: 16. What bivalves are sessile (non-moving)? What bivalves can move? 17. Describe the function of the siphon of a clam. 18. Describe the function of the adductor muscles in a clam. 19. How do mussels attach to their substrate? 20. What is the umbo on a bivalve? 21. How does a clam detect light? 22. Some clams have eyes, which ones are they? Ms. Bruno Mollusks Review Gastropods: 23. What is the function of the operculum in a gastropod? 24. What is a nudibranch? 25. What cnidarian does a nudibranch typically consume? Cephalopods: 26. How many arms does a squid have? How many tentacles? 27. How does a squid move? 28. What is the hectocotyl of a cephalopod? 29. The only Cephalopod with an external shell is the… 30. What cephalopod has an internal bone? Label the following diagrams of the clam and the snail: Marine Biology