Question 1

What is the importance of development genes among sponges and eumetazoans?

Accepted Answer

A)   Development genes have no effect on sponges, but control the growth rates of eumetazoans.
B)   Development genes are types of biomarkers that develop distinctly with each animal clade.
C)   Development genes code for regulation of the body form changes in animals.
D)   None of these answer options are correct.
E)   Development genes code for proteins that speed up mutation rates in DNA of eumetazoans.F) None of the above
G) C) and D)

Question 2

The embryonic germ layer of tissue in animals that develops into the digestive tract,and organs derived from the digestive tract,is the

Accepted Answer

A)   ectoderm.
B)   protoderm.
C)   mesoderm.
D)   pachyderm.
E)   endoderm.F) C) and E)
G) C) and D)

Question 3

A fluid-filled body cavity that forms completely within the mesoderm of animals is a

Accepted Answer

A)   deuterostome.
B)   blastula.
C)   gastrula.
D)   protostome.
E)   coelom.F) A) and E)
G) B) and C)

Question 4

Which of the following is not a characteristic of the echinoderms?

Accepted Answer

A)   They have bilateral symmetry in larvae.
B)   They exhibit cephalization.
C)   They have spiny skin.
D)   They have radial symmetry in adults.
E)   They have a complete digestive tract.F) None of the above
G) A) and B)

Question 5

Figuer: 
-Tiktaalik either crawled or paddled in shallow tropical streams about 380 MYA,during the late Devonian period.These shallow waters often became anaerobic.What selective advantage would Tiktaalik have under these conditions?

Accepted Answer

A)   It could crawl on shore and feed on birds and reptiles that were on land.
B)   It could lift its head out of the water and breathe air through its gills.
C)   It could crawl out of the water and walk over to new shallow streams.
D)   It could lift its head out of the water and breathe air through its lungs.
E)   It could swim better than fish.F) A) and E)
G) C) and D) D

Question 6

Mammals that lay eggs are marsupials.

Accepted Answer

A) True 
 B)False

Question 7

Even semi-aquatic reptiles like crocodiles and alligators can spend much of their life on dry land.Which of the following is an example of an adaptation that would allow reptiles to live and reproduce on dry land?

Accepted Answer

A)   amniotic eggs
B)   external fertilization and amniotic eggs
C)   internal fertilization and amniotic eggs
D)   internal fertilization
E)   external fertilizationF) B) and D)
G) A) and D)

Question 8

An animal that maintains its body temperature by using heat generated from its own metabolism is a(n)

Accepted Answer

A)   thermophile.
B)   endotherm.
C)   mesophile.
D)   amniote.
E)   ectotherm.F) B) and E)
G) B) and D)

Question 9

An animal with an indirect development undergoes a metamorphosis in which larvae do not resemble the adult.

Accepted Answer

A) True 
 B)False

Question 10

The three major body regions of many arthropods are

Accepted Answer

A)   head, gills, and legs.
B)   head, thorax, and abdomen.
C)   head, gastrovascular cavity, and thorax.
D)   head, abdomen, and legs.
E)   head, thorax, and legs.F) B) and E)
G) All of the above B

Question 11

Bats,birds,and dragonflies can all fly.Which of the following groups of animals have some members capable of flight?

Accepted Answer

A)   reptiles and mammals
B)   amphibians and arthropods
C)   reptiles, amphibians, and arthropods
D)   mammals and arthropods
E)   reptiles, arthropods, and mammalsF) A) and B)
G) A) and C)

Question 12

Figuer:
Main animal groups are noted at the right. Names diverging at each node are morphological or body form names. Note that the animal traits key to distinguishing the groups and body forms are not shown. 
-If an animal is an invertebrate,this means that the animal

Accepted Answer

A)   does not have a complete digestive tract.
B)   has a backbone.
C)   does not have a backbone.
D)   does not have true tissues.
E)   has a complete digestive tract.F) B) and C)
G) C) and D)

Question 13

Which of the following is not a characteristic found among the animals?

Accepted Answer

A)   They have a developmental stage called a blastula.
B)   They are multicellular eukaryotes.
C)   They are heterotrophs.
D)   They secrete and bind to a substance called the extracellular matrix.
E)   They form a dikaryotic cell during development.F) A) and E)
G) C) and E)

Question 14

The free-swimming tunicate larva resembles a tadpole. Once it settles headfirst onto a solid surface the tail and notochord disappear, and the nerve cord shrinks to nearly nothing. The adults, which are usually sessile, retain only the pharyngeal slits. Neither adult nor larva is segmented.
-A tunicate is in which group?

Accepted Answer

A)   Nematodes
B)   Chordates
C)   Mollusks
D)   Annelids
E)   EchinodermsF) D) and E)
G) B) and E)

Question 15

Pinworms and hookworms belong to the phylum containing the

Accepted Answer

A)   Flatworms.
B)   Cnidarians.
C)   Sponges.
D)   Nematodes.
E)   Annelids.F) A) and B)
G) D) and E)

Question 16

In most species, the female frog lays her eggs directly in the water as a male clasps her back and releases sperm. The fertilized eggs hatch into legless, aquatic tadpoles. Most tadpoles feed on algae, and have gills. As they mature, tadpoles develop legs and lungs, lose the tail, and acquire carnivorous tastes.
-Frogs are in which group?

Accepted Answer

A)   amphibians
B)   mammals
C)   fishes
D)   lancelets
E)   reptilesF) A) and D)
G) A) and B)

Question 17

Which of the following is not a characteristic of a nematode?

Accepted Answer

A)   They have a complete digestive tract.
B)   They have bilateral symmetry.
C)   They are unsegmented.
D)   They have a coelom.
E)   They exhibit cephalization.F) D) and E)
G) C) and E)

Question 18

Sponges belong to the phylum containing the

Accepted Answer

A)   Nematodes.
B)   Flatworms.
C)   Cnidarians.
D)   Annelids.
E)   Sponges.F) A) and B)
G) B) and E) D

Question 19

Figuer:
Main animal groups are noted at the right. Names diverging at each node are morphological or body form names. Note that the animal traits key to distinguishing the groups and body forms are not shown. 
-Which of the following characteristics do all animals share?

Accepted Answer

A)   They are single-celled prokaryotes.
B)   They are multicellular prokaryotes.
C)   They are single-celled eukaryotes.
D)   They are multicellular eukaryotes.E) A) and B)
F) A) and C)

Question 20

Caenorhabditis elegans is a nematode that scientists have shown grows from a single cell into about 1000 cells,of which the same 80 cells die during development through apoptosis.Studying this process in Caenorhabditis elegans has helped scientists identify the genes that regulate similar processes in humans.Which of the following statements is supported by this observation?

Accepted Answer

A)   Caenorhabditis elegans have all of the same genes as humans.
B)   Caenorhabditis elegans give live birth like humans.
C)   Caenorhabditis elegans infections in humans trigger apoptosis.
D)   Caenorhabditis elegans and humans have a common ancestor.
E)   Caenorhabditis elegans has the same organs that are present in humans.F) A) and D)
G) All of the above

Exam 21: Animals

What is the importance of development genes among sponges and eumetazoans?

Correct Answer
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The embryonic germ layer of tissue in animals that develops into the digestive tract,and organs derived from the digestive tract,is the

Correct Answer
verified

A fluid-filled body cavity that forms completely within the mesoderm of animals is a

Correct Answer
verified

Which of the following is not a characteristic of the echinoderms?

Correct Answer
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Figuer: -Tiktaalik either crawled or paddled in shallow tropical streams about 380 MYA,during the late Devonian period.These shallow waters often became anaerobic.What selective advantage would Tiktaalik have under these conditions?

Correct Answer
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D

Mammals that lay eggs are marsupials.

Correct Answer
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Even semi-aquatic reptiles like crocodiles and alligators can spend much of their life on dry land.Which of the following is an example of an adaptation that would allow reptiles to live and reproduce on dry land?

Correct Answer
verified

An animal that maintains its body temperature by using heat generated from its own metabolism is a(n)

Correct Answer
verified

An animal with an indirect development undergoes a metamorphosis in which larvae do not resemble the adult.

Correct Answer
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The three major body regions of many arthropods are

Correct Answer
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B

Bats,birds,and dragonflies can all fly.Which of the following groups of animals have some members capable of flight?

Correct Answer
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Figuer: Main animal groups are noted at the right. Names diverging at each node are morphological or body form names. Note that the animal traits key to distinguishing the groups and body forms are not shown. -If an animal is an invertebrate,this means that the animal

Correct Answer
verified

Which of the following is not a characteristic found among the animals?

Correct Answer
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Pinworms and hookworms belong to the phylum containing the

Correct Answer
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Correct Answer
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Which of the following is not a characteristic of a nematode?

Correct Answer
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Sponges belong to the phylum containing the

Correct Answer
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D

Figuer: Main animal groups are noted at the right. Names diverging at each node are morphological or body form names. Note that the animal traits key to distinguishing the groups and body forms are not shown. -Which of the following characteristics do all animals share?

Correct Answer
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Correct Answer
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Exam 21: Animals

What is the importance of development genes among sponges and eumetazoans?

Correct AnswerverifiedShow Answer

The embryonic germ layer of tissue in animals that develops into the digestive tract,and organs derived from the digestive tract,is the

Correct AnswerverifiedShow Answer

A fluid-filled body cavity that forms completely within the mesoderm of animals is a

Correct AnswerverifiedShow Answer

Which of the following is not a characteristic of the echinoderms?

Correct AnswerverifiedShow Answer

Figuer: -Tiktaalik either crawled or paddled in shallow tropical streams about 380 MYA,during the late Devonian period.These shallow waters often became anaerobic.What selective advantage would Tiktaalik have under these conditions?

Correct AnswerverifiedD

Mammals that lay eggs are marsupials.

Correct AnswerverifiedShow Answer

Even semi-aquatic reptiles like crocodiles and alligators can spend much of their life on dry land.Which of the following is an example of an adaptation that would allow reptiles to live and reproduce on dry land?

Correct AnswerverifiedShow Answer

An animal that maintains its body temperature by using heat generated from its own metabolism is a(n)

Correct AnswerverifiedShow Answer

An animal with an indirect development undergoes a metamorphosis in which larvae do not resemble the adult.

Correct AnswerverifiedShow Answer

The three major body regions of many arthropods are

Correct AnswerverifiedB

Bats,birds,and dragonflies can all fly.Which of the following groups of animals have some members capable of flight?

Correct AnswerverifiedShow Answer

Figuer: Main animal groups are noted at the right. Names diverging at each node are morphological or body form names. Note that the animal traits key to distinguishing the groups and body forms are not shown. -If an animal is an invertebrate,this means that the animal

Correct AnswerverifiedShow Answer

Which of the following is not a characteristic found among the animals?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Pinworms and hookworms belong to the phylum containing the

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which of the following is not a characteristic of a nematode?

Correct AnswerverifiedShow Answer

Sponges belong to the phylum containing the

Correct AnswerverifiedD

Figuer: Main animal groups are noted at the right. Names diverging at each node are morphological or body form names. Note that the animal traits key to distinguishing the groups and body forms are not shown. -Which of the following characteristics do all animals share?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

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D

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B

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D

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