____________________1. In the following analogy: a word or phrase is missing. Complete the analogy... cocoon:clitellum::shell:__?__.

____________________2. In mollusks, the __?__ usually contains the mouth and other structures included in feeding.

____________________3. If a grain of sand gets between the mantle and shell of an oyster, the mantle gland may cover it to form a (an) _____.

____________________4. Most mollusks have a special kind of larvae called __?__.

____________________5. Tongue-shaped structure in mollusks used for eating.

____________________6. Adult bivalves that can move around by flapping their shells are __?__.

____________________7. In a cephalopod, the foot __?__.

____________________8. Members of the __?__ branch of gastropods are, without shell and brightly colored to indicated that they are poisonous.

____________________9. Pearls and shells of mollusks are formed by secretions from the __?__.

____________________10. Mollusk which are filter feeders, use feathery __?__ to sift food from the water.

____________________11. Which phylum is made up of animals that move by means of a broad muscular foot located on their ventral side.

____________________12. Name for area containing internal organs in mollusks.

____________________13. In mollusks, ammonia is removed from the blood and released from the body through __?__.

____________________14. In most tentacled mollusks fertilization occurs __?__.

____________________15. Branch of the mollusks with two hinged shells are called __?__.

____________________16. One major class of mollusks is __?__.

____________________17. The "head-foot" mollusks are the _____.

____________________18. Current investigations of mollusks are based on the observation that they develop cancers constantly. T F

____________________19. Cephalopods where given their name because their head is attached to their __?__.

____________________20. Precious gems called __?__ are the results of mantle secretions covering a foreign particle located between shell and mantle.

____________________21. In oysters, the mixture of food and mucus is moved to the mouth by __?__.

____________________22. Some nudibranchs protect themselves in each of the following ways except by __?__.

____________________23. The only living cephalopods with shells are the _____.

____________________24. The land slug is believed to have evolved from a __?__.

____________________25. Land snails and slugs have adapted the __?__ cavity to acquire oxygen.

____________________26. In mollusks, cellular metabolism produces nitrogen containing wastes in the form of nitrates. T F

____________________27. The shell of a mollusk consists of calcium carbonate produced by glands in the __?__.

____________________28. Within mollusk, a simple heart is used for internal transport through what is called and __?__.

____________________29. A thin delicate tissue layer that covers most of a mollusk's body, much like a cloak.

____________________30. Which "smart" mollusk is often used to study the way animals learn __?__.

____________________31. Mollusks are or have been used for each of the following except __?__.

____________________32. Softbellied animals that typically have a shell are known as __?__.

____________________33. Animals who's internal transport system pumps blood through blood vessels have what we call a __?__.

____________________34. What are the four basic parts of a mollusk?

____________________35. The gills of a clam are located in the __?__.

____________________36. Mollusks that are carnivores drill through the shells of other animals by means of __?__.

____________________37. The specific mollusk that can be trained to do tasks by the use of reward or punishment is the _____.

____________________38. Which mollusk has from 38 to 80 tentacles __?__.

____________________39. A mollusk that swim by flapping its broad, muscular foot is probably a __?__.

____________________40. A gland in the mantle secretes calcium carbonate to create a __?__ in mollusks.

____________________41. The teeth of the radula have evolved into long, hollow darts attached to poison glands in snails known as coneshells. T F

____________________42. In most shelled mollusk fertilization occurs __?__.

____________________43. Class of mollusks which means head-pod?

____________________44. Trochophore larvae swim to open water and feed on __?__.

____________________45. The group of bivalves that burrow into sand and mud includes the __?__.

____________________46. The cephalopod whose internal shell is either thin and coiled or flat and platelike is the __?__.

____________________47. The "stomach-foot" mollusks are the _____.

____________________48. Which phylum is called stomach-foot?

____________________49. __?__ serve as organs of respiration as well as filters for food.

____________________50. __?__ are open spaces in mollusk tissue through which blood can be pumped.

____________________51. Which members of the mollusks can change colors to match their surroundings?

____________________52. Aquatic mollusks breathe by means of _____.

____________________53. A scraping organ used for feeding is a __?__.

____________________54. Which is organ is used for both respiration and filter feeding in sole animals?

____________________55. Brightly-colored gills protrude from the worm's tube in feather duster worms. T F

____________________56. Which members of the mollusk family can move by using a "water jet?"

____________________57. Which of the following is not found in oysters?

____________________58. __?__? and __?__ are mollusks and have eight tentacles and two long slender arms with suckers.

____________________59. __?__ are characterized by one-part shells and a broad muscular foot.

____________________60. Nautiluses remain upright and float in the water by means of __?__.

____________________61. Compared with other mollusks, the cephalopods have __?__.

____________________62. What is the only shelled, tentacled, mollusk?

____________________63. Which organ is used for both respiration and filter feeding in some animals __?__.

____________________64. Some hermaphroditic mollusks, such as certain oysters, switch from one sex to another. T F

____________________65. One reason mollusks are classified together is that they share __?__.