Question 1

All of the following are either structures or characteristics of members of the Class Bivalvia of the Phylum Mollusca except

Accepted Answer

A)  the mantle.
B)  a radula.
C)  a shell.
D)  gills.
E)  open circulation.F) A) and B)
G) B) and C)

Question 2

Which one of the following associations between structures and arthropod groups possessing them is incorrect?

Accepted Answer

A)  Malpighian tubules-adult insects
B)  Book lungs-larval insects
C)  Uropods-decapod crustaceans
D)  Spinnerets-spiders
E)  Chelicerae-horseshoe crabsF) A) and E)
G) C) and D)

Question 3

Which one of the following choices does not describe an advantage of the chitinous exoskeleton found in arthropods?

Accepted Answer

A)  offers some protection
B)  reduces water loss
C)  allows for muscle attachment sites inside the skeleton
D)  does not impose limitations on body size
E)  provides a strong,flexible frameworkF) D) and E)
G) A) and B)

Question 4

Choose the letter of the best match from the following:
-Use their tube feet for feeding and move about using two arms at a time.

Accepted Answer

A)  sea cucumbers
B)  brittle stars
C)  sea stars
D)  sea urchinsE) A) and D)
F) All of the above

Question 5

Eyes with single lenses that respond to light and darkness are found in many arthropods;these are the

Accepted Answer

A)  compound eyes.
B)  ocelli.
C)  apposition eyes.
D)  ommatidia.
E)  superposition segments.F) C) and D)
G) All of the above

Question 6

Which class of arthropods contains members with two pairs of antennae and legs on their abdomen and thorax?

Accepted Answer

A)  Insecta
B)  Arachnida
C)  Crustacea
D)  Chilopoda
E)  MerostomataF) B) and E)
G) A) and E)

Question 7

Mollusks have all of the following except

Accepted Answer

A)  visceral mass covered with a soft epithelium.
B)  folds enclosing a cavity between themselves and the visceral mass.
C)  gills or lungs within the mantle.
D)  individuals secrete a tiny chitinous chamber,zoecium.
E)  the shell consists of a horny outer layer,which is rich in protein.F) C) and D)
G) All of the above

Question 8

In many echinoderms respiration and waste removal take place by means of finger-like projections that occur near the spines,which are called

Accepted Answer

A)  madreporite.
B)  ampulla.
C)  nerve ring.
D)  papulae.
E)  endoskeleton.F) A) and E)
G) B) and D)

Question 9

Earthworms show all of the following features except

Accepted Answer

A)  containing segments with a mouth on the first and the anus on the last.
B)  containing touch-sensitive and light-sensitive organs in the segments.
C)  containing fewer setae than in polychaetes.
D)  containing distinct head regions and parapodia.
E)  being hermaphroditic.F) B) and E)
G) None of the above

Question 10

A sieve-like plate on the echinoderms surface through which water enters the vascular system and flows to the ring canal through a tube is called

Accepted Answer

A)  madreporite.
B)  ampulla.
C)  nerve ring.
D)  skin gills.
E)  endoskeleton.F) D) and E)
G) B) and C)

Question 11

Spiders and certain other arthropods which lack jaws or mandibles are placed in a subphylum called

Accepted Answer

A)  Agnathae.
B)  Amandibulata.
C)  blood suckers.
D)  chelicerates.
E)  mandibulates.F) A) and B)
G) A) and C)

Question 12

The medicinal leech,once used to withdraw "unhealthy" blood from patients,produces which of the following to ensure blood flow from the host?

Accepted Answer

A)  antibiotics
B)  antibodies
C)  anticoagulant
D)  blood clots
E)  suture materialF) A) and C)
G) None of the above

Question 13

A marine biologist visits your biology class and begins his talk entitled,"Life as a Trochophore." A friend seated next to you asks,"What is a trochophore?" You explain that a trochophore is

Accepted Answer

A)  another name for the veliger stage in earthworm reproduction.
B)  a term used to describe a larval form of either the phylum Mollusca or Annelida.
C)  another name for the veliger stage in the oyster.
D)  similar to a lophophore,but only found in the phylum Annelida.
E)  a parasite in the intestines of a bivalve mollusk.F) C) and D)
G) A) and B)

Question 14

If you arranged the following parts of the echinoderm water vascular system from outside to its termination in a tube foot,which structure would be encountered third?

Accepted Answer

A)  stone canal
B)  radial canal
C)  ampulla
D)  madreporite
E)  ring canalF) C) and E)
G) A) and C)

Question 15

The sexual reproduction of earthworms characteristically is

Accepted Answer

A)  hermaphroditic but cross-fertilizing.
B)  hermaphroditic but self-fertilizing.
C)  normal type between individuals who remain as males and females throughout their life time.
D)  normal appearing,but individuals change sex periodically.
E)  normal appearing,but individuals reproduce only once in their lives.F) A) and E)
G) A) and D)

Question 16

The partitions that separate the segments of the annelid body are known as

Accepted Answer

A)  pseudocoels.
B)  nephridia.
C)  setae.
D)  septa.
E)  radula.F) A) and B)
G) A) and E)

Question 17

Which of the following is not true about crustaceans?

Accepted Answer

A)  They produce larvae known as nauplius.
B)  They have legs on their abdomen and thorax.
C)  They have two pairs of antennae.
D)  Many have compound eyes.
E)  They have covers called the opercula,posterior to the legs.F) A) and B)
G) B) and E)

Question 18

In arthropods,locomotion is accomplished by muscles that work against

Accepted Answer

A)  each other.
B)  the exoskeleton.
C)  a hydrostatic skeleton.
D)  mineralized bones.
E)  the pseudocoel.F) B) and D)
G) B) and E)

Question 19

In mollusks,the folds of tissue that arise from the dorsal body wall and enclose a cavity surrounding the visceral mass are called the

Accepted Answer

A)  foot.
B)  mantle.
C)  nephridia.
D)  radula.
E)  lophophorE.F) D) and E)
G) C) and E)

Question 20

Each segment of an annelid typically contains bristles of chitin called

Accepted Answer

A)  ciliA.
B)  parapodia.
C)  chaetae.
D)  leglets.
E)  setaE.F) C) and D)
G) A) and B)

Exam 34: Coelomate Invertebrates

The sexual reproduction of earthworms characteristically is

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Which one of the following associations between structures and arthropod groups possessing them is incorrect?

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Each segment of an annelid typically contains bristles of chitin called

Correct AnswerverifiedShow Answer

Earthworms show all of the following features except

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Eyes with single lenses that respond to light and darkness are found in many arthropods;these are the

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Which one of the following choices does not describe an advantage of the chitinous exoskeleton found in arthropods?

Correct AnswerverifiedShow Answer

Mollusks have all of the following except

Correct AnswerverifiedShow Answer

The medicinal leech,once used to withdraw "unhealthy" blood from patients,produces which of the following to ensure blood flow from the host?

Correct AnswerverifiedShow Answer

All of the following are either structures or characteristics of members of the Class Bivalvia of the Phylum Mollusca except

Correct AnswerverifiedShow Answer

Choose the letter of the best match from the following: -Use their tube feet for feeding and move about using two arms at a time.

Correct AnswerverifiedShow Answer

Which class of arthropods contains members with two pairs of antennae and legs on their abdomen and thorax?

Correct AnswerverifiedShow Answer

Which of the following is not true about crustaceans?

Correct AnswerverifiedShow Answer

In arthropods,locomotion is accomplished by muscles that work against

Correct AnswerverifiedShow Answer

The partitions that separate the segments of the annelid body are known as

Correct AnswerverifiedShow Answer

Spiders and certain other arthropods which lack jaws or mandibles are placed in a subphylum called

Correct AnswerverifiedShow Answer

In many echinoderms respiration and waste removal take place by means of finger-like projections that occur near the spines,which are called

Correct AnswerverifiedShow Answer

If you arranged the following parts of the echinoderm water vascular system from outside to its termination in a tube foot,which structure would be encountered third?

Correct AnswerverifiedShow Answer

A sieve-like plate on the echinoderms surface through which water enters the vascular system and flows to the ring canal through a tube is called

Correct AnswerverifiedShow Answer

A marine biologist visits your biology class and begins his talk entitled,"Life as a Trochophore." A friend seated next to you asks,"What is a trochophore?" You explain that a trochophore is

Correct AnswerverifiedShow Answer

In mollusks,the folds of tissue that arise from the dorsal body wall and enclose a cavity surrounding the visceral mass are called the

Correct AnswerverifiedShow Answer

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