Question 1

The name Echinodermata literally means

Accepted Answer

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

Question 2

All of the following are characteristics of annelids except

Accepted Answer

A)   a coelom.
B)   segmentation.
C)   a complete digestive tract.
D)   excretion via nephridia.
E)   metamorphosis.F) All of the above
G) A) and E)

Question 3

An endoparasitic acoelomate with a body consisting of a scolex and a series of proglottids is a

Accepted Answer

A)   fluke.
B)   roundworm.
C)   tapeworm.
D)   hydra.
E)   sponge.F) D) and E)
G) A) and E)

Question 4

Which of these has a coelom?

Accepted Answer

A)   sea star
B)   roundworm
C)   fluke
D)   planarian
E)   hydraF) A) and D)
G) A) and C)

Question 5

Which of these worms are segmented?

Accepted Answer

A)   annelids
B)   planarians
C)   roundworms
D)   flukes
E)   All worms are segmented.F) D) and E)
G) C) and E)

Question 6

Which of these is present in all fishes?

Accepted Answer

A)   jaws
B)   lungs
C)   fleshy, bone-containing appendages
D)   fins supported by bony spikes
E)   vertebraeF) B) and E)
G) C) and D)

Question 7

Which organism listed is a crustacean?

Accepted Answer

A)   spider
B)   scorpion
C)   tick
D)   horseshoe crab
E)   lobsterF) C) and E)
G) A) and E)

Question 8

Which of these is a bivalve?

Accepted Answer

A)   clam
B)   octopus
C)   snail
D)   squid
E)   conchF) A) and E)
G) D) and E)

Question 9

What feature is used to classify a sponge as a parazoan?

Accepted Answer

A)   molecular data
B)   reproductive abilities
C)   environment they live in
D)   feeding mechanism
E)   number of different species known to scienceF) A) and B)
G) C) and D)

Question 10

Which of these is a cephalopod?

Accepted Answer

A)   nudibranch
B)   snail
C)   oyster
D)   squid
E)   musselF) B) and E)
G) None of the above

Question 11

Why are developmental biologists especially interested in studying echinoderm embryos?

Accepted Answer

A)   Echinoderms are primitive chordates.
B)   Echinoderms are the closest living relatives of chordates.
C)   Echinoderms are the only animals with three embryonic germ layers.
D)   Echinoderms, unlike most invertebrates, retain their notochords as adults.
E)   Echinoderms, like chordates, are protostomes.F) C) and D)
G) B) and C) B

Question 12

The closest living relatives of modern humans are

Accepted Answer

A)   prosimians.
B)   African apes.
C)   New World monkeys.
D)   Asian apes.
E)   Old World monkeys.F) C) and D)
G) C) and E)

Question 13

Which are the most numerous and diverse vertebrates?

Accepted Answer

A)   reptiles
B)   lancelets
C)   cartilaginous fishes
D)   mammals
E)   bony fishesF) C) and D)
G) B) and E)

Question 14

Which feature is present in cnidarians but lacking in sponges?

Accepted Answer

A)   cellular level of organization
B)   filter feeding
C)   multicellularity
D)   radial symmetry
E)   Cnidarians are classified asanimals, while sponges are not animals.F) B) and E)
G) A) and D)

Question 15

Which group of organisms is it believed that animals evolved from?

Accepted Answer

A)   protozoan
B)   fungi
C)   bacteria
D)   archaea
E)   spongesF) All of the above
G) None of the above

Question 16

Which feature places cnidarians as eumetazoans?

Accepted Answer

A)   Cnidarians have two germ layers during development.
B)   Cnidarians are active predators.
C)   Cnidarianslive in aquatic environments.
D)   Cnidariansreproduce sexually.
E)   Cnidariansare sessile at some point of their life cycle.F) All of the above
G) C) and D)

Question 17

The repetition of body parts along the length of an animal's body is termed

Accepted Answer

A)   cephalization.
B)   coelomization.
C)   segmentation.
D)   compartmentalization.
E)   septation.F) C) and D)
G) B) and D) C

Question 18

A(n)  _____ is an individual animal that possesses both male and female sex organs.

Accepted Answer

A)   cephalopod
B)   acoelomate
C)   deuterostome
D)   larva
E)   hermaphroditeF) B) and D)
G) B) and E)

Question 19

Which of these has radial symmetry?

Accepted Answer

A)   human
B)   planarian
C)   jellyfish
D)   roundworm
E)   nudibranchF) C) and E)
G) A) and B)

Question 20

Which feature is necessary in order to classify an organism as an ecdysozoan?

Accepted Answer

A)   nonliving exoskeleton
B)   endoskeleton made of chitin
C)   closed circulatory system
D)   open circulatory system
E)   gillsF) All of the above
G) A) and E) A

Exam 19: Animals

The name Echinodermata literally means

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All of the following are characteristics of annelids except

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An endoparasitic acoelomate with a body consisting of a scolex and a series of proglottids is a

Correct AnswerverifiedShow Answer

Which of these has a coelom?

Correct AnswerverifiedShow Answer

Which of these worms are segmented?

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Which of these is present in all fishes?

Correct AnswerverifiedShow Answer

Which organism listed is a crustacean?

Correct AnswerverifiedShow Answer

Which of these is a bivalve?

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What feature is used to classify a sponge as a parazoan?

Correct AnswerverifiedShow Answer

Which of these is a cephalopod?

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Why are developmental biologists especially interested in studying echinoderm embryos?

Correct AnswerverifiedB

The closest living relatives of modern humans are

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Which are the most numerous and diverse vertebrates?

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Which feature is present in cnidarians but lacking in sponges?

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Which group of organisms is it believed that animals evolved from?

Correct AnswerverifiedShow Answer

Which feature places cnidarians as eumetazoans?

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The repetition of body parts along the length of an animal's body is termed

Correct AnswerverifiedC

A(n) _____ is an individual animal that possesses both male and female sex organs.

Correct AnswerverifiedShow Answer

Which of these has radial symmetry?

Correct AnswerverifiedShow Answer

Which feature is necessary in order to classify an organism as an ecdysozoan?

Correct AnswerverifiedA

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B

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C

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A