Question 1

An insect circulatory system is best described as

Accepted Answer

A)   totally closed like ours, with arteries and veins.
B)   similar to ours, with general closed vessels but no distinct arteries and veins.
C)   an open system that mostly washes hemolymph "blood" through the hemocoel.
D)   totally absent; each body cell manages on its own to gain food and gets rid of wastes.
E)   containing five pairs of "hearts."F) B) and D)
G) A) and C)

Question 2

Which of the following is a way that crayfish and grasshoppers are different?

Accepted Answer

A)   Crayfish have an exoskeleton, while grasshoppers do not.
B)   Grasshoppers have compound eyes, while crayfish have a simple eye.
C)   Grasshoppers have well-developed nervous systems, while crayfish have a ladder network of nerves.
D)   Grasshoppers have spicules and tracheal tubes that serve as the means of gas exchange, while crayfish have gills.
E)   Crayfish have an open circulatory system, while grasshoppers have a closed circulatory system.F) D) and E)
G) A) and B)

Question 3

Which description best fits the lophotrochozoa?

Accepted Answer

A)   As embryos, they have three germ layers that will develop into the organ level of organization as adults.
B)   As embryos, they have two germ layers that will develop into the tissue level of organization as adults.
C)   Lophotrochozoa are deuterostomes.
D)   Lophotrochozoa are primarily a terrestrial group.
E)   The lophophore, a flagellated appendage, is used to define members of this group.F) C) and E)
G) A) and C)

Question 4

Which of these is a bivalve?

Accepted Answer

A)   slug
B)   octopus
C)   earthworm
D)   snail
E)   oysterF) All of the above
G) C) and D)

Question 5

Why are real bath sponges so soft?

Accepted Answer

A)   The silica is dissolved away and only the calcium carbonate remains.
B)   The calcium carbonate is dissolved away and only the silica remains.
C)   The choanocytes are dissolved away and only the amoebocytes remain.
D)   Silica or calcium spicules are removed, leaving only the spongin fibers.
E)   The spongin is removed, leaving only the spicules.F) C) and E)
G) All of the above

Question 6

Respiratory structures in insects are

Accepted Answer

A)   commonly termed book lungs.
B)   spiracles and tracheae.
C)   hemolymphic.
D)   lamellae.
E)   lungs.F) A) and D)
G) None of the above

Question 7

If the water vascular system of the echinoderm was damaged, which echinoderm function would be impaired?

Accepted Answer

A)   locomotion
B)   respiration
C)   circulation
D)   digestion
E)   sensing the environmentF) B) and E)
G) B) and C)

Question 8

The madreporite helps the sea star

Accepted Answer

A)   reproduce.
B)   locate food.
C)   digest food and distribute it to the arms.
D)   regulate its vascular system.
E)   keep its surface clean of algae and barnacles and debris.F) C) and D)
G) B) and E)

Question 9

While exploring, you find an organism washed up on the beach. While inspecting the organism, you find it has two tissue layers and is radially symmetric. What type of organism did you find?

Accepted Answer

A)   flatworms
B)   cnidarians
C)   roundworms
D)   clams
E)   fishF) D) and E)
G) A) and E)

Question 10

The head region of a tapeworm is called the

Accepted Answer

A)   proglottid.
B)   cercaria.
C)   sporocyst.
D)   scolex.
E)   glycocalyx.F) A) and B)
G) B) and C)

Question 11

An arachnid differs from a crustacean because

Accepted Answer

A)   arachnids have book gills.
B)   arachnids are mostly aquatic and crustaceans are mostly terrestrial.
C)   only arachnids shed their exoskeletons.
D)   arachnids have two major body segments, the cephalothorax and abdomen, while crustaceans have three body segments.
E)   arachnids have four pairs of walking legs.F) A) and B)
G) A) and C)

Question 12

Sponges are generally protected from predators by the presence of calcium and silica crystals. These crystalline structures are called

Accepted Answer

A)   amoebocytes.
B)   osculum.
C)   choanocytes.
D)   spicules.
E)   spongin.F) A) and B)
G) C) and E)

Question 13

Which type of animal symmetry produces mirror images no matter how the animal is sliced longitudinally?

Accepted Answer

A)   radial symmetry
B)   asymmetrical symmetry
C)   bilateral symmetry
D)   asymmetrical symmetry and bilateral symmetry
E)   None of the answer choices is correct.F) A) and E)
G) A) and B)

Question 14

Tapeworms are ectoparasites od various vertebrates, including humans.

Accepted Answer

A) True 
 B)False

Question 15

What system do the cnidaria have that sponges lack?

Accepted Answer

A)   respiratory
B)   nervous
C)   circulatory
D)   excretory
E)   reproductiveF) B) and C)
G) B) and D)

Question 16

The major insect body parts are

Accepted Answer

A)   head, cephalothorax, and abdomen.
B)   cephalothorax, midsection, and abdomen.
C)   head, thorax, and abdomen.
D)   head, pyothorax, and metathorax.
E)   head, cephalothorax, and genitalia.F) A) and B)
G) A) and C)

Question 17

Which of the following would be classified in a phylum other than Echinodermata?

Accepted Answer

A)   sea star
B)   sea urchin
C)   sea cucumber
D)   sand dollar
E)   crayfishF) All of the above
G) A) and E)

Question 18

Which of the following is an arthropod?

Accepted Answer

A)   clams
B)   squids
C)   lobsters
D)   nautiluses
E)   snailsF) C) and D)
G) A) and B)

Question 19

If the cells of a sponge are separated, the cells will

Accepted Answer

A)   reproduce sexually.
B)   die.
C)   form spicules for protection.
D)   grow flagella and swim away.
E)   reassemble into a new organized sponge.F) None of the above
G) C) and E)

Question 20

Which group of animals have three pairs of legs, a tympanum for reception of sound waves, and Malpighian tubules for excretion?

Accepted Answer

A)   starfish
B)   lancelets
C)   crayfish
D)   grasshoppers
E)   earthwormsF) A) and E)
G) A) and C)

Exam 31: Animals: the Invertebrates

Which group of animals have three pairs of legs, a tympanum for reception of sound waves, and Malpighian tubules for excretion?

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If the cells of a sponge are separated, the cells will

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The major insect body parts are

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Why are real bath sponges so soft?

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If the water vascular system of the echinoderm was damaged, which echinoderm function would be impaired?

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The madreporite helps the sea star

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Respiratory structures in insects are

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Which of the following would be classified in a phylum other than Echinodermata?

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Which of the following is a way that crayfish and grasshoppers are different?

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Sponges are generally protected from predators by the presence of calcium and silica crystals. These crystalline structures are called

Correct AnswerverifiedShow Answer

Tapeworms are ectoparasites od various vertebrates, including humans.

Correct AnswerverifiedShow Answer

An arachnid differs from a crustacean because

Correct AnswerverifiedShow Answer

Which of these is a bivalve?

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Which description best fits the lophotrochozoa?

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What system do the cnidaria have that sponges lack?

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The head region of a tapeworm is called the

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An insect circulatory system is best described as

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Which of the following is an arthropod?

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While exploring, you find an organism washed up on the beach. While inspecting the organism, you find it has two tissue layers and is radially symmetric. What type of organism did you find?

Correct AnswerverifiedShow Answer

Which type of animal symmetry produces mirror images no matter how the animal is sliced longitudinally?

Correct AnswerverifiedShow Answer

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