Question 1

Which of the following organisms exhibit radial symmetry as adults?

Accepted Answer

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

Question 2

Which of these is a bivalve?

Accepted Answer

A)  slug
B)  octopus
C)  earthworm
D)  snail
E)  oysterF) B) and D)
G) B) and C)

Question 3

Which statement about sponges is NOT correct?

Accepted Answer

A)  The larval form is flagellated and able to swim to a suitable location.
B)  Sponges are classified on the basis of their type of skeletal material.
C)  Sponges resemble a colony of flagellated cells more than a multicellular animal.
D)  Sponges are thought to be at the base of the evolutionary tree,leading to more complex animals such as corals and worms.
E)  Sponges can reproduce sexually or asexually.F) A) and E)
G) A) and B)

Question 4

The insect organ most equivalent to the human lung in function is the

Accepted Answer

A)  tracheae.
B)  midgut.
C)  crop.
D)  gizzard.
E)  Malpighian tubule.F) D) and E)
G) A) and D)

Question 5

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

Accepted Answer

A)  Both have tympanum for use in mating rituals.
B)  Both have malpighian tubules that function in the extraction of nitrogenous waste.
C)  Both have spicules and a tracheal system for respiration.
D)  Both have bodies that are composed of a cephalothorax and abdomen.
E)  Both have antennae that have a sensory function.F) C) and E)
G) A) and C)

Question 6

Which of the following statements is NOT true about the flatworms?

Accepted Answer

A)  Tapeworms have a ladder-type nervous system similar to other flatworms.
B)  Planaria contain pigmented,photosensitive eyespots.
C)  Liver flukes and blood flukes are parasites in humans only.
D)  Schistosomiasis is a common human blood disease caused by flukes in tropical areas.
E)  Tapeworms are hermaphroditic,having both male and female reproductive structures in each proglottid.F) B) and D)
G) B) and E)

Question 7

Which of the following would not show the five characteristics typically found in animals?

Accepted Answer

A)  sponges,which have no true tissues but have two layers of cells that perform different functions
B)  planaria,who have an incomplete digestive tract but do have muscles and excretory and reproductive systems
C)  trypanosome,a single-celled organism that causes sleeping sickness in humans
D)  leeches,segmented worms that are predatory on other animals
E)  tapeworms,flatworms that infest the intestines of humansF) B) and D)
G) C) and E)

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

The life cycle of animals

Accepted Answer

A)  demonstrates alternation of generations,where the zygote is haploid and the adult is diploid.
B)  does not demonstrate alternation of generations.Both the zygote and the adult are haploid.
C)  demonstrates alternation of generations,where the zygote is diploid and the adult is haploid.
D)  does not demonstrate alternation of generations because only the spores are haploid.
E)  does not demonstrate alternation of generations; gametes are haploid and the organism is diploid.F) A) and B)
G) A) and C)

Question 10

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) D) and E)
G) A) and D)

Question 11

If echinoderms are radially symmetrical,why are they not in the same phylum as the cnidarians?

Accepted Answer

A)  Echinoderms branched from cnidarians,but are considered more advanced because they also gave rise to chordates.
B)  The echinoderm larvae are originally bilaterally symmetrical but metamorphose into a radially symmetrical adult.
C)  Radial symmetry is maintained as a primitive state by all animals in the embryonic stage and can appear anywhere.
D)  Echinoderms are the most primitive of the deuterostomes and evolution begins in each group with radial symmetry.
E)  Echinoderms have a five-sided bilateral symmetry that just appears to be radial.F) A) and D)
G) A) and C)

Question 12

Which of the following is NOT a characteristic of echinoderms?

Accepted Answer

A)  adult is radially symmetrical
B)  locomotion by muscles
C)  endoskeleton of spiny,calcium-rich plates
D)  larva is bilaterally symmetrical
E)  both sexual and asexual reproductionF) A) and B)
G) All of the above

Question 13

Which of these parasitic worms is NOT a nematode?

Accepted Answer

A)  Ascaris
B)  Trichinella
C)  the worm that causes elephantiasis
D)  hookworm
E)  the worm that causes schistosomiasisF) C) and E)
G) B) and E)

Question 14

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) A) and C)
G) A) and E)

Question 15

Fertilization in the earthworm is accomplished by the use of the

Accepted Answer

A)  nephridia.
B)  clitellum.
C)  flame cells.
D)  trachea.
E)  typhlosole.F) A) and B)
G) D) and E)

Question 16

Which type of organism is characterized by having jointed appendages,ability to molt,and three sets of fused segments?

Accepted Answer

A)  molluscs
B)  echinoderms
C)  arthropods
D)  annelids
E)  chordatesF) C) and E)
G) A) and D)

Question 17

"Derm" means "skin," so the name Echinodermata literally means

Accepted Answer

A)  soft skin.
B)  circulation of water.
C)  spiny skin.
D)  skinless.
E)  ability to store water.F) A) and B)
G) B) and E)

Question 18

Ascaris is considered to be a(n)

Accepted Answer

A)  flatworm.
B)  earthworm.
C)  roundworm.
D)  cnidarian.
E)  arthropod.F) A) and B)
G) A) and D)

Question 19

The term deuterostome refers to

Accepted Answer

A)  having a spiny skin.
B)  having three germ layers.
C)  possessing a notochord.
D)  the second embryonic opening becoming the mouth.
E)  the coelom forming by outpocketing of the primitive gut.F) B) and C)
G) B) and E)

Question 20

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 fresh water.F) A) and B)
G) A) and C)

Exam 31: Animals: Part I

The insect organ most equivalent to the human lung in function is the

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Which of the following is NOT a characteristic of echinoderms?

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The life cycle of animals

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Which of the following would not show the five characteristics typically found in animals?

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Fertilization in the earthworm is accomplished by the use of the

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Which body structure describes the freshwater hydra?

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Which of the following statements is NOT true about the flatworms?

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Which of these parasitic worms is NOT a nematode?

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Echinoderms and cnidarians

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Which of these is a bivalve?

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"Derm" means "skin," so the name Echinodermata literally means

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Ascaris is considered to be a(n)

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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?

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Which of the following is NOT an echinoderm?

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

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Which statement about sponges is NOT correct?

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If echinoderms are radially symmetrical,why are they not in the same phylum as the cnidarians?

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Which type of organism is characterized by having jointed appendages,ability to molt,and three sets of fused segments?

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The term deuterostome refers to

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Which of the following organisms exhibit radial symmetry as adults?

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