Mollusks &
Annelids
Across
2. Protects the visceral mass and forms a shell
3. Class containing earthworms
4. Animals with a fully-lined body cavity
5. Marine gastropod in which the foot is modified into wing-like structures
11. Paired structures with eyes in snails that help locate food
14. Worms with segmented bodies
15. Ciliated, larval form of mollusks
18. Flexible, tongue-like feeding organ in mollusks
19. Five pairs of heart-like structures in earthworms
21. Bivalves that do not move or move very little
22. Holds the 2 shells of bivalves together so they can open and close
23. Excretory structures in earthworms
24. Cephalopod with eight arms or tentacles
26. Class containing snails and slugs
29. A thickened section of the earthworm’s body that secretes mucus
31. Bivalve mollusk that makes pearls
33. Fast swimming cephalopod with ten tentacles
34. Incurrent and excurrent tubes where water enters and leaves bivalves
Down
1. Stores exchanged sperm in earthworms
6. Mollusks with a two-part shell
7. Cephalopod with an external, chambered shell
8. Fleshy protrusions on marine annelids that help them move and breathe
9. Phylum for octopus, squid, clams, and snails
10. Muscular structure for movement along with the anterior end where most sensory
organs are found
12. Class containing leeches
13. Fluid in the circulatory system of mollusks
16. Part of the mollusks body containing its organs
17. Marine gastropod without a shell
20. fluid-filled body cavity in mollusks
25. How mollusks respire
27. Terrestrial mollusk without a shell
28. Predatory, marine mollusks
30. 180 degree twisting of the visceral mass in gastropods
32. External bristles that help earthworms move