Question 1

Parasitic tapeworms are members of the phylum

Accepted Answer

A)   Platyhelminthes.
B)   Cnidaria.
C)   Arthropoda.
D)   Nematoda.
E)   Annelida.

Question 2

The endoskeleton of an echinoderm is composed of

Accepted Answer

A)   cellulose.
B)   silica.
C)   lignan.
D)   chitin.
E)   calcium carbonate.

Question 3

A cnidarian, which is radially symmetrical, has _________germ layer(s) .

Accepted Answer

A)   no
B)   one
C)   two
D)   three
E)   four

Question 4

How does the skeletal system of an arachnid differ from that of a cephalopod?

Accepted Answer

Arachnids have an exoskeleton ...

Question 5

Members of the taxonomic group _________are best described as having a large, well -developed brain, having excellent vision, and being marine carnivorous predators.

Accepted Answer

A)   bivalves
B)   cephalopods
C)   oligochaetes
D)   insects
E)   gastropods

Question 6

The venomous sea wasp is classified in the phylum

Accepted Answer

A)   Cnidaria.
B)   Mollusca.
C)   Nematoda.
D)   Arthropoda.
E)   Annelida.

Question 7

Hydra, anemones, and jellyfish are in the phylum

Accepted Answer

A)   Protista.
B)   Platyhelminthes.
C)   Flagellates.
D)   Cnidaria.
E)   Porifera.

Question 8

Your job is to classify a newly discovered animal species. Your initial studies reveal that your specimen has tissues, organs, and a head; has no body cavity or segmentation; and has bilateral symmetry. To what phylum does this animal belong?

Accepted Answer

A)   Cnidaria
B)   Mollusca
C)   Annelida
D)   Platyhelminthes
E)   Porifera

Question 9

Your job is to classify a newly discovered animal species. Your initial studies reveal that your specimen has tissues, organs, a head, and a coelom; has no segmentation; and has bilateral symmetry. To what phylum does this animal belong?

Accepted Answer

A)   Cnidaria
B)   Mollusca
C)   Annelida
D)   Platyhelminthes
E)   Porifera

Question 10

An animal such as a grasshopper can conserve water because it has an elaborately branching system of tubes within its body that it uses for gas exchange. These tubes are called

Accepted Answer

A)   gills.
B)   flame cells.
C)   tracheae.
D)   book lungs.
E)   kidneys.

Question 11

The low energy demands of nematodes allow them to survive without a

Accepted Answer

A)   body cavity.
B)   tubular gut.
C)   reproductive system.
D)   skeleton.
E)   respiratory system.

Question 12

The leeches used by doctors to prevent blood clotting and stimulate the growth of blood vessels in patients recovering from reconstructive surgery are members of the phylum

Accepted Answer

A)   Cnidaria.
B)   Nematoda.
C)   Arthropoda.
D)   Platyhelminthes.
E)   Annelida.

Question 13

If someone discovered a new compound that stops metamorphosis at the larval stage, what would be the benefits and drawbacks of this pesticide for humans?

Accepted Answer

On the positive side, the organisms woul...

Question 14

The simplest multicellular animals that have only a few different cell types are

Accepted Answer

A)   sponges.
B)   sea squirts.
C)   flatworms.
D)   jellyfish.
E)   anemones.

Question 15

Sponges have

Accepted Answer

A)   an exoskeleton.
B)   a gastrovascular cavity.
C)   a nerve net.
D)   spicules.
E)   muscles.

Question 16

How many tissue layers are in the embryos of sponges?

Accepted Answer

A)   None
B)   One
C)   Two
D)   Three
E)   Four

Question 17

Charles Darwin wrote that members of the phylum_________ are particularly important for agriculture because they mix and aerate soil.

Accepted Answer

A)   Arthropoda
B)   Nematoda
C)   Platyhelminthes
D)   Cnidaria
E)   Annelida

Question 18

A cnidarian that builds a calcium carbonate skeleton is a(n)

Accepted Answer

A)   snail.
B)   crab.
C)   oyster.
D)   clam.
E)   coral.

Question 19

An arthropod embryo has _________germ layer(s) .

Accepted Answer

A)   no
B)   one
C)   two
D)   three
E)   four

Question 20

Which of the following characteristics is often associated with animals that are radially symmetrical?

Accepted Answer

A)   Gastrovascular cavity
B)   Cephalization
C)   Sessile or otherwise nonmobile
D)   Mesoderm
E)   Mobility

Exam 24: Animal Diversity I: Invertebrates

Which of the following characteristics is often associated with animals that are radially symmetrical?

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Sponges have

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Your job is to classify a newly discovered animal species. Your initial studies reveal that your specimen has tissues, organs, and a head; has no body cavity or segmentation; and has bilateral symmetry. To what phylum does this animal belong?

Correct AnswerverifiedShow Answer

The simplest multicellular animals that have only a few different cell types are

Correct AnswerverifiedShow Answer

The endoskeleton of an echinoderm is composed of

Correct AnswerverifiedShow Answer

Your job is to classify a newly discovered animal species. Your initial studies reveal that your specimen has tissues, organs, a head, and a coelom; has no segmentation; and has bilateral symmetry. To what phylum does this animal belong?

Correct AnswerverifiedShow Answer

How many tissue layers are in the embryos of sponges?

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An arthropod embryo has _________germ layer(s) .

Correct AnswerverifiedShow Answer

A cnidarian, which is radially symmetrical, has _________germ layer(s) .

Correct AnswerverifiedShow Answer

The leeches used by doctors to prevent blood clotting and stimulate the growth of blood vessels in patients recovering from reconstructive surgery are members of the phylum

Correct AnswerverifiedShow Answer

The venomous sea wasp is classified in the phylum

Correct AnswerverifiedShow Answer

The low energy demands of nematodes allow them to survive without a

Correct AnswerverifiedShow Answer

A cnidarian that builds a calcium carbonate skeleton is a(n)

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If someone discovered a new compound that stops metamorphosis at the larval stage, what would be the benefits and drawbacks of this pesticide for humans?

Correct AnswerverifiedOn the positive side, the organisms woul...View AnswerShow Answer

Charles Darwin wrote that members of the phylum_________ are particularly important for agriculture because they mix and aerate soil.

Correct AnswerverifiedShow Answer

Hydra, anemones, and jellyfish are in the phylum

Correct AnswerverifiedShow Answer

An animal such as a grasshopper can conserve water because it has an elaborately branching system of tubes within its body that it uses for gas exchange. These tubes are called

Correct AnswerverifiedShow Answer

Members of the taxonomic group _________are best described as having a large, well -developed brain, having excellent vision, and being marine carnivorous predators.

Correct AnswerverifiedShow Answer

How does the skeletal system of an arachnid differ from that of a cephalopod?

Correct AnswerverifiedArachnids have an exoskeleton ...View AnswerShow Answer

Parasitic tapeworms are members of the phylum

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On the positive side, the organisms woul...
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Arachnids have an exoskeleton ...
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