Across
- 3. This structure (style) is used in concert with a gastric shield in a “mortar & pestle” digestive method
- 4. These cells control cephalopods’ ability to alter the way light hits them
- 6. This type of gill structure is considered more primitive, and relies on a 3 chambered heart (water in 2 ways and out 1)
- 10. Indigestible grit excreted by filter feeding bivalves
- 14. Bivalves do not exhibit a clear “head”, the process that normally forms the head structure is called _____
- 15. Paired chemosensory organs in molluscs
- 17. Gland in Lamellibranch bivalves that produces a “beard” of threads to help anchor them to a substrate
- 18. Most common type of reproduction conducted by molluscs
- 19. This class is often found in deep benthic water
- 21. Ectoparasitic larvae of some freshwater mussels
- 23. Siphuncle, chromatophores, and iridocytes are all structures in what class
- 24. This member of the class Cephalopoda has an internal chambered shell
- 26. The external, feathery gills developed by Opisthobranchs
- 28. Aplacaphora has ________ in place of a shell
- 29. Free-swimming mollusc larvae with ciliated velum
- 30. The lateral folds of the foot that Opisthobranchs have used to modify that muscle
- 32. A specialized morphological feature in Protobranchia that aids them in deposit feeding
- 33. Means that the individual has a left-coiled shell
- 34. These cells control cephalopods’ color-changing ability
- 35. The function of the radula that is different for aplacophorans
- 36. Formed from muscular wavy muscles, used for locomotion in some clades
- 37. A set of light and dark colored bands of muscle fibers that relax and contract, aid in locomotion
- 40. The name of the protinacious shield that many gastropods have on their foot
Down
- 1. Type of flow (exchange) used to maximize flow of oxygen into the blood
- 2. The only member of cephalopoda that still has an external shell
- 5. Opisthobranchs use _____ for chemosensory purposes
- 7. Their shell forms as a series of 7 to 8 plates
- 8. Formal term for the synapomorphic structure used for gas exchange
- 9. Bioluminescent cells
- 11. Excretory system in molluscs
- 12. Structure in cephalopods that was modified from foot
- 13. Toothed, tongue-like organ used for rasping at food
- 16. This class has a tusk-like, conical shell that is open at both ends
- 20. Feeding tentacles of Scaphopods/Tusk Shells
- 22. Secretes calcareous compounds for structural and defensive use
- 25. Specialized arm for reproduction possessed by some male cephalopods
- 26. Basal to molluscs, yet reduced in all extant taxa
- 27. Fleshy skirt on chitons
- 31. Respiratory opening of pulmonate gastropods
- 38. Aplachophoran body plan
- 39. This large blood sinus is sometimes used in locomotion