Question 1

The chitinous bristles that earthworms use to anchor themselves in the earth and pull themselves along are

Accepted Answer

A)   aortic arches.
B)   lateral ventricles.
C)   setae.
D)   parapodia.
E)   nephridia.F) B) and D)
G) A) and E)

Question 2

Earthworms possess both male and female organs on separate segments; thus mating consists of "parallel parking" in opposite directions and cross-fertilizing.Given this,which of the following is/are true?

Accepted Answer

A)   This is evidence of a primitive state that is generally less efficient than separate sexes.
B)   This is primarily to allow them to self-fertilize if no other worm is in their sector of the soil.
C)   This is an advantage since they can mate with any other earthworm of the same species that they encounter.
D)   Maintaining any system not clearly male or female is disadvantageous; the earthworm is trapped in an evolutionary dead end.
E)   This demonstrates the how ineffective self-fertilization is as a means of reproduction.F) C) and E)
G) None of the above

Question 3

Which of these statements is NOT correct about the flatworms?

Accepted Answer

A)   Tapeworms do not have a larval stage.
B)   Planaria ingest food through a mouth located in the head region.
C)   Flukes have two suckers by which they attach to and feed from host tissues.
D)   Tapeworms have a scolex with hooks and suckers by which they attach to the host's intestinal tissues.
E)   Tapeworms enter the human body through undercooked meat, especially pork, which contains encysted larval forms.F) C) and D)
G) C) and E)

Question 4

Which pair exhibits the closest relationship?

Accepted Answer

A)   spider-tick
B)   housefly-mite
C)   earthworm-grasshopper
D)   crayfish-planarian
E)   scorpion-clamF) A) and E)
G) A) and D)

Question 5

Which difference distinguishes protostomes from deuterostomes?

Accepted Answer

A)   nervous system
B)   embryonic development
C)   circulatory system
D)   cephalization
E)   presence or lack of notochordF) C) and D)
G) C) and E)

Question 6

Echinoderms and cnidarians

Accepted Answer

A)   are both radially symmetrical.
B)   both have three germ layers.
C)   both have the sac body plan.
D)   are both deuterostomes.
E)   are both found in freshwater.F) All of the above
G) D) and E)

Question 7

What system do the cnidaria have that sponges lack?

Accepted Answer

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

Question 8

Which of the following is NOT an echinoderm?

Accepted Answer

A)   sea star
B)   sea urchin
C)   sea cucumber
D)   sand dollar
E)   crayfishF) None of the above
G) A) and E)

Question 9

Clams,snails,sea slugs,and octopuses belong to the phylum

Accepted Answer

A)   Annelida.
B)   Mollusca.
C)   Porifera.
D)   Platyhelminthes.
E)   Arthropoda.F) A) and B)
G) A) and C)

Question 10

Which statement about arachnids is NOT true?

Accepted Answer

A)   Ticks and mites are often parasitic.
B)   Spiders and scorpions are predators.
C)   Spiders have trachea for respiration.
D)   Spiders have a pair of fangs which release poison.
E)   The body parts include a cephalothorax and an abdomen.F) A) and E)
G) C) and D)

Question 11

Which of the following organisms show the typical method of acquiring food that is found in animals?

Accepted Answer

A)   Euglena, who are autotrophic and heterotrophic.
B)   Basidiomycetes, club fungi, who decompose wood and other plant material.
C)   Earthworms, annelids, who feed on any available organic matter that they can take into their mouths
D)   Volvox, a colonial alga that is autotrophic
E)   Archaea, who are chemotrophic.F) C) and D)
G) A) and B)

Question 12

Which feature is not found in the lophotrochozoa?

Accepted Answer

A)   As embryos they have two germ layers that develop into their body systems.
B)   Aquatic lifestyle.
C)   Bilaterally symmetrical during some stage of their development.
D)   Use a lophophore as a feeding apparatus.
E)   They are protostomes.F) A) and D)
G) A) and E)

Question 13

Tapeworms are specialized for parasitism by an excessive development of which system?

Accepted Answer

A)   muscular
B)   reproductive
C)   excretory
D)   circulatory
E)   digestiveF) A) and D)
G) None of the above

Question 14

A sea star's nervous system includes

Accepted Answer

A)   no actual nerve cells.
B)   a complex of nerve ganglia in each ray.
C)   a central nervous system, including a brain.
D)   a central nerve ring that gives off radial nerves in each arm.
E)   a dorsal hollow nerve cord.F) D) and E)
G) A) and C)

Question 15

The largest animal group,both in number of species and number of individuals,is the

Accepted Answer

A)   annelids.
B)   crustacea.
C)   insects.
D)   reptiles.
E)   fishes.F) A) and D)
G) A) and C)

Question 16

The complex eye that can distinguish shapes is found

Accepted Answer

A)   only in advanced vertebrates.
B)   in molluscs and indicates that vertebrate eyes originated with ancestors common with this group.
C)   in molluscs but the eye structure evolved differently.
D)   in arthropods and indicates that vertebrate eyes originated with ancestors common with this group.
E)   in echinoderms and indicates that vertebrate eyes originated with ancestors common with this group.F) C) and E)
G) C) and D)

Question 17

Which of these is NOT a characteristic of sponges?

Accepted Answer

A)   sessile filter feeders
B)   body wall has two cell layers
C)   flagellated collar cells move water
D)   water enters through a single cavity, the osculum
E)   amoeboid cells transport food and make skeletal fibers and gametesF) B) and E)
G) A) and B)

Question 18

The cephalopods resemble other molluscs because they have

Accepted Answer

A)   focusing camera-type eyes.
B)   a siphon for jet-propulsion.
C)   a parrot-like beak for tearing prey.
D)   well-developed brains with high learning capacity.
E)   most of the internal organs located in a visceral mass.F) B) and C)
G) C) and E)

Question 19

Which body structure describes the freshwater hydra?

Accepted Answer

A)   a swimming medusa with mouth pointing downward
B)   a swimming medusa with mouth pointing upward
C)   a sessile medusa with mouth pointing upward
D)   a sessile polyp form with mouth pointing downward
E)   a freely moving polyp with mouth pointing upwardF) None of the above
G) C) and D)

Question 20

Which type of animal symmetry produces mirror images of each other 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 these.F) B) and E)
G) B) and C)

Exam 31: Animals: the Invertebrates

Which statement about arachnids is NOT true?

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The cephalopods resemble other molluscs because they have

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Which of the following organisms show the typical method of acquiring food that is found in animals?

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The largest animal group,both in number of species and number of individuals,is the

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Which of these is NOT a characteristic of sponges?

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Which body structure describes the freshwater hydra?

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Which of these statements is NOT correct about the flatworms?

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What system do the cnidaria have that sponges lack?

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A sea star's nervous system includes

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Clams,snails,sea slugs,and octopuses belong to the phylum

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

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Echinoderms and cnidarians

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Earthworms possess both male and female organs on separate segments; thus mating consists of "parallel parking" in opposite directions and cross-fertilizing.Given this,which of the following is/are true?

Correct AnswerverifiedShow Answer

Which pair exhibits the closest relationship?

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The complex eye that can distinguish shapes is found

Correct AnswerverifiedShow Answer

The chitinous bristles that earthworms use to anchor themselves in the earth and pull themselves along are

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Which of the following is NOT an echinoderm?

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Which feature is not found in the lophotrochozoa?

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Tapeworms are specialized for parasitism by an excessive development of which system?

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Which difference distinguishes protostomes from deuterostomes?

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