Question 1

Which of the following deuterostomes has a proboscis?

Accepted Answer

A)   Feather stars
B)   Sea cucumbers
C)   Acorn worms
D)   Snakes
E)   CrowsF) C) and D)
G) B) and E) C

Question 2

Which of the following are NOT protostomes?

Accepted Answer

A)   Clams
B)   Earthworms
C)   Crabs
D)   Spiders
E)   MilkfishF) A) and D)
G) C) and D)

Question 3

Which of the following appears to have evolved independently in different animal taxa, and therefore its presence is not considered a useful characteristic for determining phylogeny?

Accepted Answer

A)   Ectoderm
B)   Pseudocoelom
C)   Endoderm
D)   Exoderm
E)   MesodermF) A) and B)
G) A) and C) B

Question 4

The common ancestor of all animals is/are the:

Accepted Answer

A)   yeast.
B)   rotifers.
C)   sponges.
D)   bacteria.
E)   choanoflagellates.F) B) and C)
G) A) and D) E

Question 5

What is the key characteristic that defines the Ecdysozoa clade?

Accepted Answer

A)   The animal molts.
B)   The animal is a deuterostome.
C)   The animal has motile larvae.
D)   The animal has bilateral symmetry.
E)   The animal develops three tissue layers.F) A) and E)
G) A) and C)

Question 6

Your abdominal cavity, which contains most of your major organs, is a:

Accepted Answer

A)   coelom lined by endoderm and mesoderm.
B)   pseudocoelom lined by mesoderm.
C)   pseudocoelom lined by endoderm.
D)   coelom lined by ectoderm.
E)   coelom lined by mesoderm.F) A) and C)
G) A) and E)

Question 7

The cephalic end of an animal is toward its head.

Accepted Answer

A) True 
 B)False

Question 8

How can radial symmetry be an advantage to slow-moving or sessile marine organisms?

Accepted Answer

Radial symmetry allows equal distributio...

Question 9

The inner germ layer, or ectoderm, forms which of the following structures?

Accepted Answer

A)   Outer covering of the body, as well as nervous tissue
B)   Lining of digestive structures
C)   Muscles
D)   Skeletal structures
E)   Circulatory system (when present) F) B) and D)
G) A) and E)

Question 10

What are the two clades of the protostomes?

Accepted Answer

A)   Eumetazoa and Metazoa
B)   Protostomia and Bilateria
C)   Bilateria and Deutersostomia
D)   Lophotrochozoa and Ecdysozoa
E)   Lophotrochozoa and DeutrerostomiaF) A) and E)
G) B) and D)

Question 11

The vast majority of bilateral animals have a fluid-filled body cavity, or coelom. Which of the following is an exception?

Accepted Answer

A)   Horses
B)   Sparrows
C)   Spiders
D)   Flatworms
E)   FrogsF) A) and E)
G) C) and E)

Question 12

One true characteristic of all animals is that they:

Accepted Answer

A)   are mobile.
B)   have a brain.
C)   are heterotrophs.
D)   have an organ system.
E)   only show sexual reproduction.F) B) and C)
G) A) and D)

Question 13

A marine invertebrate placed into freshwater would have difficulty surviving because:

Accepted Answer

A)   it would not be able to obtain food.
B)   it would have difficulty with buoyancy.
C)   it would have difficulty with osmoregulation.
D)   it would not experience the temperature stability found in the oceans.
E)   it would not be able to obtain oxygen due to the absence of waves in the water.F) B) and C)
G) A) and B)

Question 14

Match between columns
                        Premises: Blastopore becomes anus

Accepted Answer

The Answer of protostomes and deuterostomes is...

Question 15

Which was the primary challenge animals faced in adapting to life on land?

Accepted Answer

A)   The presence of new predators
B)   Being able to adapt to move on land
C)   The need for more oxygen to do work
D)   Finding a mate in the new environment
E)   The desiccating effect of the atmosphereF) C) and E)
G) A) and E)

Question 16

What is the common ancestor of animals and how did they evolve into animals?

Accepted Answer

Choanoflagellates are a group of protist...

Question 17

Which of the following is characteristic to most protostomes?

Accepted Answer

A)   The blastophore typically develops into the anus.
B)   There is no blastophore.
C)   The developmental fate of the embryonic cells tends to occur via indeterminate cleavage.
D)   Cell division tends to be via spiral cleavage.
E)   The blastophore typically develops into the brain.F) All of the above
G) B) and D)

Question 18

Match between columns
                        Premises: Radial cleavage

Accepted Answer

The Answer of deuterostomes and protostomes is...

Question 19

Match between columns
                        Premises: Indeterminate cleavage

Accepted Answer

The Answer of protostomes and deuterostomes is...

Question 20

You are told that the digestive tract of the animal you are studying developed an anus before a mouth. You realize that you may be looking at a(n) :

Accepted Answer

A)   earthworm.
B)   insect.
C)   sponge.
D)   clam.
E)   sea star.F) C) and D)
G) A) and B)

Exam 30: An Introduction to Animal Diversity

Which of the following deuterostomes has a proboscis?

Correct Answer
verified
C

Which of the following are NOT protostomes?

Correct Answer
verified

Which of the following appears to have evolved independently in different animal taxa, and therefore its presence is not considered a useful characteristic for determining phylogeny?

Correct Answer
verified
B

The common ancestor of all animals is/are the:

Correct Answer
verified
E

What is the key characteristic that defines the Ecdysozoa clade?

Correct Answer
verified

Your abdominal cavity, which contains most of your major organs, is a:

Correct Answer
verified

The cephalic end of an animal is toward its head.

Correct Answer
verified

How can radial symmetry be an advantage to slow-moving or sessile marine organisms?

Correct Answer
verified
Radial symmetry allows equal distributio...
View Answer

The inner germ layer, or ectoderm, forms which of the following structures?

Correct Answer
verified

What are the two clades of the protostomes?

Correct Answer
verified

The vast majority of bilateral animals have a fluid-filled body cavity, or coelom. Which of the following is an exception?

Correct Answer
verified

One true characteristic of all animals is that they:

Correct Answer
verified

A marine invertebrate placed into freshwater would have difficulty surviving because:

Correct Answer
verified

Indicate whether the following characteristics are found in deuterostomes or protostomes.

Which was the primary challenge animals faced in adapting to life on land?

Correct Answer
verified

What is the common ancestor of animals and how did they evolve into animals?

Correct Answer
verified
Choanoflagellates are a group of protist...
View Answer

Which of the following is characteristic to most protostomes?

Correct Answer
verified

Indicate whether the following characteristics are found in deuterostomes or protostomes.

Indicate whether the following characteristics are found in deuterostomes or protostomes.

You are told that the digestive tract of the animal you are studying developed an anus before a mouth. You realize that you may be looking at a(n) :

Correct Answer
verified

Exam 30: An Introduction to Animal Diversity

Which of the following deuterostomes has a proboscis?

Correct AnswerverifiedC

Which of the following are NOT protostomes?

Correct AnswerverifiedShow Answer

Which of the following appears to have evolved independently in different animal taxa, and therefore its presence is not considered a useful characteristic for determining phylogeny?

Correct AnswerverifiedB

The common ancestor of all animals is/are the:

Correct AnswerverifiedE

What is the key characteristic that defines the Ecdysozoa clade?

Correct AnswerverifiedShow Answer

Your abdominal cavity, which contains most of your major organs, is a:

Correct AnswerverifiedShow Answer

The cephalic end of an animal is toward its head.

Correct AnswerverifiedShow Answer

How can radial symmetry be an advantage to slow-moving or sessile marine organisms?

Correct AnswerverifiedRadial symmetry allows equal distributio...View AnswerShow Answer

The inner germ layer, or ectoderm, forms which of the following structures?

Correct AnswerverifiedShow Answer

What are the two clades of the protostomes?

Correct AnswerverifiedShow Answer

The vast majority of bilateral animals have a fluid-filled body cavity, or coelom. Which of the following is an exception?

Correct AnswerverifiedShow Answer

One true characteristic of all animals is that they:

Correct AnswerverifiedShow Answer

A marine invertebrate placed into freshwater would have difficulty surviving because:

Correct AnswerverifiedShow Answer

Indicate whether the following characteristics are found in deuterostomes or protostomes.

Which was the primary challenge animals faced in adapting to life on land?

Correct AnswerverifiedShow Answer

What is the common ancestor of animals and how did they evolve into animals?

Correct AnswerverifiedChoanoflagellates are a group of protist...View AnswerShow Answer

Which of the following is characteristic to most protostomes?

Correct AnswerverifiedShow Answer

Indicate whether the following characteristics are found in deuterostomes or protostomes.

Indicate whether the following characteristics are found in deuterostomes or protostomes.

You are told that the digestive tract of the animal you are studying developed an anus before a mouth. You realize that you may be looking at a(n) :

Correct AnswerverifiedShow Answer

Correct Answer
verified
C

Correct Answer
verified

Correct Answer
verified
B

Correct Answer
verified
E

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Radial symmetry allows equal distributio...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Choanoflagellates are a group of protist...
View Answer

Correct Answer
verified

Correct Answer
verified