1. Chapter 27 – Worms and Mollusks A
Topic 1
Topic 2
Topic 3
Topic 4
Topic 5
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FINAL ROUND

2. Topic 1: $100 Question
The simplest animals to have three embryonic germ layers. Bilateral symmetry, and cephalization are the ___________.
a. nematodes
b. roundworms
c. flatworms
d. leeches
ANSWER
BACK TO GAME

3. Topic 1: $100 Answer
The simplest animals to have three embryonic germ layers. Bilateral symmetry, and cephalization are the ___________.
a. nematodes
b. roundworms
c. flatworms
d. leeches
BACK TO GAME

4. Topic 1: $200 Question
Some snails and other mollusks never seem to develop any form of ___________.
a. mucus
b. polychaetes
c. trochophores
d. cancer
ANSWER
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5. Topic 1: $200 Answer
Some snails and other mollusks never seem to develop any form of ___________.
a. mucus
b. polychaetes
c. trochophores
d. cancer
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6. Topic 1: $300 Question
The type of embryonic tissue that lines a true coelom is called _________.
a. mesoderm
b. gastroderm
c. endoderm
d. ectoderm
ANSWER
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7. Topic 1: $300 Answer
The type of embryonic tissue that lines a true coelom is called _________.
a. mesoderm
b. gastroderm
c. endoderm
d. ectoderm
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8. Topic 1: $400 Question
Many free-living roundworms are __________, which are animals that eat other animals.
a. herbivores
b. carnivores
c. detritivores
d. bacteria
ANSWER
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9. Topic 1: $400 Answer
Many free-living roundworms are __________, which are animals that eat other animals.
a. herbivores
b. carnivores
c. detritivores
d. bacteria
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10. Topic 1: $500 Question
Roundworms have a tube-within-a-tube digestive tract with two openings—a mouth and a(an) ___________.
a. gut
b. anus
c. belly
d. foot
ANSWER
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11. Topic 1: $500 Answer
Roundworms have a tube-within-a-tube digestive tract with two openings—a mouth and a(an) ___________.
a. gut
b. anus
c. belly
d. foot
BACK TO GAME

12. The primary host of Schistosoma mansoni is a(an) a. flatworm b. sheep
Topic 2: $100 Question
The primary host of Schistosoma mansoni is a(an)
a. flatworm
b. sheep
c. human
d. dog
ANSWER
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13. The primary host of Schistosoma mansoni is a(an) a. flatworm b. sheep
Topic 2: $100 Answer
The primary host of Schistosoma mansoni is a(an)
a. flatworm
b. sheep
c. human
d. dog
BACK TO GAME

14. Topic 2: $200 Question
A filter-feeding annelid fans water through tubelike burrows and catches food particles in a ____________ bag.
a. shopping
b. filter
c. mucus
d. woven silk
ANSWER
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15. Topic 2: $200 Answer
A filter-feeding annelid fans water through tubelike burrows and catches food particles in a ____________ bag.
a. shopping
b. filter
c. mucus
d. woven silk
BACK TO GAME

16. Topic 2: $300 Question
The foot of most cephalopods is divided into eight or more arms called ____________.
a. sporangia
b. tentacles
c. tail fibers
d. toes
ANSWER
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17. Topic 2: $300 Answer
The foot of most cephalopods is divided into eight or more arms called ____________.
a. sporangia
b. tentacles
c. tail fibers
d. toes
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18. Topic 2: $400 Question
The shell of most mollusks is composed of ____________, which is secreted by glands in the mantle.
a. chitin
b. proteins
c. calcium carbonate
d. sodium bicarbonate
ANSWER
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19. Topic 2: $400 Answer
The shell of most mollusks is composed of ____________, which is secreted by glands in the mantle.
a. chitin
b. proteins
c. calcium carbonate
d. sodium bicarbonate
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20. Topic 2: $500 Question
A marine animal that has a(an) _______________ larva and a true coelom could be either an annelid or a mollusk—it is impossible to classify it without further information.
a. polychaete
b. trochophore
c. carnivorous
d. prokaryotic
ANSWER
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21. Topic 2: $500 Answer
A marine animal that has a(an) _______________ larva and a true coelom could be either an annelid or a mollusk—it is impossible to classify it without further information.
a. polychaete
b. trochophore
c. carnivorous
d. prokaryotic
BACK TO GAME

22. Topic 3: $100 Question
Many aquatic mollusks have a free-swimming larval stage, called a(an) ___________ larva.
a. trochophore
b. carnivorous
c. herbivorous
d. prokaryotic
ANSWER
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23. Topic 3: $100 Answer
Many aquatic mollusks have a free-swimming larval stage, called a(an) ___________ larva.
a. trochophore
b. carnivorous
c. herbivorous
d. prokaryotic
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24. Topic 3: $200 Question
Bottom-dwelling annelids from the class __________ are important in marine ecosystems and form part of the diets of fishes and crustaceans.
a. Polychaeta
b. Oligochaeta
c. SandsofIwoJimaeta
d. Chondrichthaeta
ANSWER
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25. Topic 3: $200 Answer
Bottom-dwelling annelids from the class __________ are important in marine ecosystems and form part of the diets of fishes and crustaceans.
a. Polychaeta
b. Oligochaeta
c. SandsofIwoJimaeta
d. Chondrichthaeta
BACK TO GAME

26. Topic 3: $300 Question
Annelids have a(an) ________ circulatory system, in which blood is contained in a network of blood vessels.
a. open
b. semi-tubular
c. nephridic
d. closed
ANSWER
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27. Topic 3: $300 Answer
Annelids have a(an) ________ circulatory system, in which blood is contained in a network of blood vessels.
a. open
b. semi-tubular
c. nephridic
d. closed
BACK TO GAME

28. Topic 3: $400 Question
Sandworms and bloodworms are members of the class of marine annelids called ____________.
a. oligochaetes
b. polychaetes
c. sandsofIwoJimaetes
d. chondrichthaetes
ANSWER
BACK TO GAME

29. Topic 3: $400 Answer
Sandworms and bloodworms are members of the class of marine annelids called ____________.
a. oligochaetes
b. polychaetes
c. sandsofIwoJimaetes
d. chondrichthaetes
BACK TO GAME

30. Topic 3: $500 Question
The larvae of the roundworm species named __________ form cycts in the host’s muscle tissue.
a. Trichinella
b. Schistomyosin
c. leech
d. night crawler
ANSWER
BACK TO GAME

31. Topic 3: $500 Answer
The larvae of the roundworm species named __________ form cycts in the host’s muscle tissue.
a. Trichinella
b. Schistomyosin
c. leech
d. night crawler
BACK TO GAME

32. c. Parasitic roundworms lack a reproductive system.
Topic 4: $100 Question
How do the body systems of parasitic roundworms generally compare to those of free-living roundworms?
a. They are more complex.
b. They are simpler.
c. Parasitic roundworms lack a reproductive system.
d. Free-living roundworms have an internal transport system.
ANSWER
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33. c. Parasitic roundworms lack a reproductive system.
Topic 4: $100 Answer
How do the body systems of parasitic roundworms generally compare to those of free-living roundworms?
a. They are more complex.
b. They are simpler.
c. Parasitic roundworms lack a reproductive system.
d. Free-living roundworms have an internal transport system.
BACK TO GAME

34. a. Both groups have setae. b. Both groups have a trochophore larva.
Topic 4: $200 Question
Which of the following is evidence that mollusks and annelids may be closely related?
a. Both groups have setae.
b. Both groups have a trochophore larva.
c. Neither group has lungs.
d. Both groups include both marine and terrestrial animals.
ANSWER
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35. a. Both groups have setae. b. Both groups have a trochophore larva.
Topic 4: $200 Answer
Which of the following is evidence that mollusks and annelids may be closely related?
a. Both groups have setae.
b. Both groups have a trochophore larva.
c. Neither group has lungs.
d. Both groups include both marine and terrestrial animals.
BACK TO GAME

36. A type of worm that is an external parasite is the
Topic 4: $300 Question
A type of worm that is an external parasite is the
a. tapeworm.
b. polychaete.
c. leech.
d. earthworm.
ANSWER
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37. A type of worm that is an external parasite is the
Topic 4: $300 Answer
A type of worm that is an external parasite is the
a. tapeworm.
b. polychaete.
c. leech.
d. earthworm.
BACK TO GAME

38. What causes the disease called elephantiasis?
Topic 4: $400 Question
What causes the disease called elephantiasis?
a. flukes
b. ascarid worms
c. hookworms
d. filarial worms
ANSWER
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39. What causes the disease called elephantiasis?
Topic 4: $400 Answer
What causes the disease called elephantiasis?
a. flukes
b. ascarid worms
c. hookworms
d. filarial worms
BACK TO GAME

40. Earthworms are oligochaetes because they
Topic 4: $500 Question
Earthworms are oligochaetes because they
a. have just a few setae on each segment.
b. reproduce sexually.
c. have bodies made up of identical segments.
d. are parasitic.
ANSWER
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41. Earthworms are oligochaetes because they
Topic 4: $500 Answer
Earthworms are oligochaetes because they
a. have just a few setae on each segment.
b. reproduce sexually.
c. have bodies made up of identical segments.
d. are parasitic.
BACK TO GAME

42. Topic 5: $100 Question
Earthworms benefit gardeners because their tunnels provide passageways for
a. leeches.
b. polychaetes.
c. plant roots and water.
d. planarians.
ANSWER
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43. Topic 5: $100 Answer
Earthworms benefit gardeners because their tunnels provide passageways for
a. leeches.
b. polychaetes.
c. plant roots and water.
d. planarians.
BACK TO GAME

44. a. Bivalves are largely sedentary, while squids move quickly.
Topic 5: $200 Question
Why is an open circulatory system adequate for a bivalve, such as a clam, but not for a cephalopod, such as a squid?
a. Bivalves are largely sedentary, while squids move quickly.
b. Bivalves have relatively high oxygen demands.
c. Cephalopods have relatively low oxygen demands.
d. Bivalves are filter-feeders, and cephalopods are plant eaters.
ANSWER
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45. a. Bivalves are largely sedentary, while squids move quickly.
Topic 5: $200 Answer
Why is an open circulatory system adequate for a bivalve, such as a clam, but not for a cephalopod, such as a squid?
a. Bivalves are largely sedentary, while squids move quickly.
b. Bivalves have relatively high oxygen demands.
c. Cephalopods have relatively low oxygen demands.
d. Bivalves are filter-feeders, and cephalopods are plant eaters.
BACK TO GAME

46. c. a body cavity between the ectoderm and mesoderm. d. no body cavity.
Topic 5: $300 Question
Mollusks have
a. a pseudocoelom.
b. a true coelom.
c. a body cavity between the ectoderm and mesoderm.
d. no body cavity.
ANSWER
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47. c. a body cavity between the ectoderm and mesoderm. d. no body cavity.
Topic 5: $300 Answer
Mollusks have
a. a pseudocoelom.
b. a true coelom.
c. a body cavity between the ectoderm and mesoderm.
d. no body cavity.
BACK TO GAME

48. The most active mollusks are the a. bivalves. b. cephalopods.
Topic 5: $400 Question
The most active mollusks are the
a. bivalves.
b. cephalopods.
c. gastropods.
d. nudibranchs.
ANSWER
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49. The most active mollusks are the a. bivalves. b. cephalopods.
Topic 5: $400 Answer
The most active mollusks are the
a. bivalves.
b. cephalopods.
c. gastropods.
d. nudibranchs.
BACK TO GAME

50. A pond snail is an example of a(an)
Topic 5: $500 Question
A pond snail is an example of a(an)
a. roundworm.
b. flatworm.
c. annelid.
d. gastropod.
ANSWER
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51. A pond snail is an example of a(an)
Topic 5: $500 Answer
A pond snail is an example of a(an)
a. roundworm.
b. flatworm.
c. annelid.
d. gastropod.
BACK TO GAME

52. Question: a. Choice 1 b. Choice 2 c. Choice 3 d. Choice 4
FINAL ROUND Question
Question:
a. Choice 1
b. Choice 2
c. Choice 3
d. Choice 4
ANSWER
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53. c. Choice 3 (correct answer) d. Choice 4
FINAL ROUND Answer
Question:
a. Choice 1
b. Choice 2
c. Choice 3 (correct answer)
d. Choice 4
BACK TO GAME