Question 1

The nitrogenous waste in mollusks is removed by

Accepted Answer

A)  flame cells.
B)  nephridia.
C)  Malpighian tubules.
D)  incurrent siphon.
E)  flagella.F) B) and D)
G) C) and E)

Question 2

All echinoderms share the following characteristics except

Accepted Answer

A)  bilateral symmetrical larvae.
B)  radial symmetrical adults.
C)  regeneration of a lost body part.
D)  pentamerous body plan.
E)  larvae are sedentary,adults are planktonic.F) A) and E)
G) B) and E)

Question 3

The phylum that includes snails,clams,oysters,and octopuses is the

Accepted Answer

A)  EctoproctA.
B)  Brachiopoda.
C)  Mollusca.
D)  Annelida.
E)  Phoronida.F) A) and C)
G) D) and E)

Question 4

Which one of the following annelid structures or events is not correctly paired with its role in locomotion?

Accepted Answer

A)  circular muscles contract-segment becomes thin and long
B)  longitudinal muscles contract-segment becomes thick and short
C)  fluid in coelom-provides a hydrostatic skeleton
D)  septum-allows each segment to move independently
E)  chaetae-provides gas exchange surface for body musclesF) C) and E)
G) B) and D)

Question 5

Chelicerae function as

Accepted Answer

A)  eyes.
B)  fangs or pincers.
C)  jaws or mandibles.
D)  teeth.
E)  wings.F) A) and B)
G) B) and E)

Question 6

Which of the following are not found in a bivalve?

Accepted Answer

A)  tentacle,radula,and distinctive head
B)  large wedge-shaped foot
C)  mantle enveloping the internal organs
D)  two large adductor muscles
E)  complex gillsF) B) and E)
G) All of the above

Question 7

Choose the letter of the best match from the following:
-Barnacles

Accepted Answer

A)  Araci
B)  Isoptera
C)  Crustacea
D)  Chilopoda
E)  EctoparasitesF) A) and B)
G) C) and D)

Question 8

Brachiopods develop as protostomes,but they show ______ cleavage.

Accepted Answer

The answer of Brachiopods develop as protostomes,but they show ______...

Question 9

In many arthropods,body segments have become fused into functional groups called ______.

Accepted Answer

The answer of In many arthropods,body segments have become fused...

Question 10

Choose the letter of the best match from the following:
-Are active predators that move about on their tube feet.

Accepted Answer

A)  sea cucumbers
B)  brittle stars
C)  sea stars
D)  sea urchinsE) A) and B)
F) A) and C)

Question 11

The functions of the lophophore include all of the following except as a

Accepted Answer

A)  surface for gas exchange.
B)  food-collecting organ.
C)  means of attachment to the substrate.
D)  rasping tongue.
E)  location for the tentacles and the anus.F) A) and B)
G) All of the above

Question 12

Among mollusks,which of the following are able to change their sex in one single season?

Accepted Answer

A)  sea slugs and oysters
B)  squids and octopuses
C)  bivalves
D)  snails
E)  clamsF) B) and C)
G) A) and E)

Question 13

The organ that is responsible for secreting cocoons in the oligochaetes is known as the

Accepted Answer

A)  nephridiA.
B)  setae.
C)  radula.
D)  clitellum.
E)  lophophorE.F) B) and E)
G) A) and E)

Question 14

These echinoderms have soft,slug-like bodies with tough,leathery skin.They are the

Accepted Answer

A)  sea pansies.
B)  sea lilies.
C)  sea daisies.
D)  sea cucumbers.
E)  sea anemones.F) B) and E)
G) B) and C)

Question 15

The excretory structures of terrestrial arthropods are slender projections from the digestive tract that are attached at the junction of the midgut and hindgut.These are called

Accepted Answer

A)  flame cells.
B)  kidneys and bladders.
C)  Malpighian tubules.
D)  nephridia.
E)  ocelli.F) B) and D)
G) C) and D)

Question 16

Reproductive modes of echinoderms include all of the following except

Accepted Answer

A)  breaking into parts and regenerating new animals from them.
B)  breaking into equal parts which become two whole animals.
C)  developing from trochophore larvae.
D)  external sexual reproduction produces fertilized eggs.
E)  fertilized eggs develop into free-swimming,bilaterally symmetrical larvaE.F) C) and D)
G) B) and D)

Question 17

Which of the following are dwellers of deep ocean floor and shallow waters,where they pull themselves along two arms at a time,like oars rowing a boat?

Accepted Answer

A)  sea lilies
B)  brittle stars
C)  sea stars
D)  sea urchins
E)  sand dollarsF) C) and E)
G) A) and B)

Question 18

A marine biologist makes a presentation about crustaceans to your biology class.He explains that he has recently received an NSF grant to study sessile crustaceans.You are only aware of one group of sessile crustaceans.This crustacean must be

Accepted Answer

A)  a lobster.
B)  a crayfish.
C)  a shrimp.
D)  a barnacle.
E)  the nauplius.F) D) and E)
G) None of the above

Question 19

Ectoprocts are characterized by all of the following except their

Accepted Answer

A)  secretion of a tiny chitinous chamber,the zoecium.
B)  chemical communication between individuals through pores between chambers.
C)  habitation in fresh and marine water.
D)  alternate names Bryozoa and moss animals.
E)  use of a pedicle to attach to the substratE.F) A) and C)
G) B) and E)

Question 20

Examples of mollusks that live on land are the

Accepted Answer

A)  earthworms.
B)  land crabs.
C)  mussels.
D)  scorpions.
E)  snails and slugs.F) All of the above
G) D) and E)

Exam 34: Coelomate Invertebrates

The functions of the lophophore include all of the following except as a

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These echinoderms have soft,slug-like bodies with tough,leathery skin.They are the

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Which of the following are dwellers of deep ocean floor and shallow waters,where they pull themselves along two arms at a time,like oars rowing a boat?

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Chelicerae function as

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The organ that is responsible for secreting cocoons in the oligochaetes is known as the

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Reproductive modes of echinoderms include all of the following except

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Examples of mollusks that live on land are the

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The phylum that includes snails,clams,oysters,and octopuses is the

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All echinoderms share the following characteristics except

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Which of the following are not found in a bivalve?

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Ectoprocts are characterized by all of the following except their

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Choose the letter of the best match from the following: -Barnacles

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Which one of the following annelid structures or events is not correctly paired with its role in locomotion?

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Brachiopods develop as protostomes,but they show ______ cleavage.

Correct AnswerverifiedShow Answer

Choose the letter of the best match from the following: -Are active predators that move about on their tube feet.

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Among mollusks,which of the following are able to change their sex in one single season?

Correct AnswerverifiedShow Answer

The excretory structures of terrestrial arthropods are slender projections from the digestive tract that are attached at the junction of the midgut and hindgut.These are called

Correct AnswerverifiedShow Answer

The nitrogenous waste in mollusks is removed by

Correct AnswerverifiedShow Answer

In many arthropods,body segments have become fused into functional groups called ______.

Correct AnswerverifiedShow Answer

A marine biologist makes a presentation about crustaceans to your biology class.He explains that he has recently received an NSF grant to study sessile crustaceans.You are only aware of one group of sessile crustaceans.This crustacean must be

Correct AnswerverifiedShow Answer

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