Question 1

Within the mollusks, only the cephalopods have a:

Accepted Answer

A)  closed circulatory system.
B)  tubular gut.
C)  coelom.
D)  hinged shell.
E)  radula.F) A) and D)
G) A) and C)

Question 2

The major difference between protostomes and deuterostomes is:

Accepted Answer

A)  the presence or absence of a coelom.
B)  the way the body cavity forms.
C)  the presence or absence of cephalization.
D)  the type of body symmetry.
E)  the presence or absence of tissues.F) A) and B)
G) A) and C)

Question 3

The only invertebrates capable of flight are arachnids. True or False?

Accepted Answer

A) True 
 B)False

Question 4

The endoskeleton of an echinoderm is composed of:

Accepted Answer

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

Question 5

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

Accepted Answer

A)  no
B)  one
C)  two
D)  three
E)  fourF) C) and E)
G) C) and D)

Question 6

Flatworms that contain both male and female reproductive organs in the same individual are called ________.

Accepted Answer

The answer of Flatworms that contain both male and female...

Question 7

In the animal kingdom, cephalization is:

Accepted Answer

A)  development of a body that has paired structures forming a side-to-side mirror image.
B)  concentration of sensory structures in the head.
C)  the ability to respond rapidly to external stimuli.
D)  evolutionary development of a netlike system of veins.
E)  development of eyes at the anterior end of the organism.F) A) and E)
G) B) and D)

Question 8

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)  Platyhelminthes.
C)  Annelida.
D)  Arthropoda.
E)  Nematoda.F) B) and C)
G) A) and E)

Question 9

A hemocoel or blood cavity is found in or associated with:

Accepted Answer

A)  all animals.
B)  an open circulatory system.
C)  sponges.
D)  cephalopods.
E)  acoelomates.F) B) and C)
G) None of the above

Question 10

Animals obtain energy through photosynthesis. True or False?

Accepted Answer

A) True 
 B)False

Question 11

A ________ is an organism whose body cavity forms between the body wall and the digestive system.

Accepted Answer

A)  sponge
B)  protostome
C)  hermaphrodite
D)  deuterostome
E)  nematodeF) C) and E)
G) B) and E)

Question 12

The phylum Nematoda includes which of the following very common organisms, some of which are parasitic and most of which are often found in soil?

Accepted Answer

A)  segmented worms
B)  roundworms
C)  flatworms
D)  earthworms
E)  tapewormsF) A) and B)
G) B) and D)

Question 13

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

Accepted Answer

A)  mobility
B)  gastrovascular cavity
C)  sessile or otherwise nonmobile
D)  mesoderm
E)  cephalizationF) A) and E)
G) B) and E)

Question 14

Which of the following characteristics is associated with all animals that are bilaterally symmetrical at some point in their life cycle?

Accepted Answer

A)  lack of organs
B)  gastrovascular cavity
C)  coelom
D)  mesoderm
E)  cephalizationF) None of the above
G) C) and D)

Question 15

A crayfish is a member of the phylum:

Accepted Answer

A)  Echinodermata.
B)  Mollusca.
C)  Annelida.
D)  Platyhelminthes.
E)  Arthropoda.F) B) and E)
G) All of the above

Question 16

Oysters are classified in the phylum:

Accepted Answer

A)  Echinodermata.
B)  Mollusca.
C)  Annelida.
D)  Platyhelminthes.
E)  Arthropoda.F) A) and E)
G) C) and D)

Question 17

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

Accepted Answer

A)  Cnidaria
B)  Mollusca
C)  Echinodermata
D)  Platyhelminthes
E)  NematodaF) A) and C)
G) A) and D)

Question 18

Worms with a well-developed circulatory system (including five pairs of hearts) are:

Accepted Answer

A)  platyhelminths.
B)  annelids.
C)  echinoderms.
D)  nematodes.
E)  eels.F) A) and D)
G) C) and D)

Question 19

Of all of the invertebrate phyla, only members of the phylum ________ can fly.

Accepted Answer

A)  Cnidaria
B)  Platyhelminthes
C)  Annelida
D)  Arthropoda
E)  NematodaF) A) and E)
G) None of the above

Question 20

Flatworms have a coelom that is only partially surrounded with mesoderm. True or False?

Accepted Answer

A) True 
 B)False

Exam 23: Animal Diversity I: Invertebrates

The phylum Nematoda includes which of the following very common organisms, some of which are parasitic and most of which are often found in soil?

Correct AnswerverifiedShow Answer

A ________ is an organism whose body cavity forms between the body wall and the digestive system.

Correct AnswerverifiedShow Answer

Animals obtain energy through photosynthesis. True or False?

Correct AnswerverifiedShow Answer

A hemocoel or blood cavity is found in or associated with:

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Worms with a well-developed circulatory system (including five pairs of hearts) are:

Correct AnswerverifiedShow Answer

The major difference between protostomes and deuterostomes is:

Correct AnswerverifiedShow Answer

The endoskeleton of an echinoderm is composed of:

Correct AnswerverifiedShow Answer

Flatworms have a coelom that is only partially surrounded with mesoderm. True or False?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Within the mollusks, only the cephalopods have a:

Correct AnswerverifiedShow Answer

Which of the following characteristics is associated with all animals that are bilaterally symmetrical at some point in their life cycle?

Correct AnswerverifiedShow Answer

In the animal kingdom, cephalization is:

Correct AnswerverifiedShow Answer

Flatworms that contain both male and female reproductive organs in the same individual are called ________.

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

A crayfish is a member of the phylum:

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Of all of the invertebrate phyla, only members of the phylum ________ can fly.

Correct AnswerverifiedShow Answer

Oysters are classified in the phylum:

Correct AnswerverifiedShow Answer

The only invertebrates capable of flight are arachnids. True or False?

Correct AnswerverifiedShow Answer

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