Question 1

Solid worms that lack a body cavity are known as

Accepted Answer

A) acoelomates. 
B) pseudocoelomates. 
C) triploblastiC. 
D) coelomates. 
E) diploblastic. 
A) acoelomates. 
B) pseudocoelomates. 
C) triploblastiC. 
D) coelomates. 
E) diploblastic.

Question 2

Protostomes develop through

Accepted Answer

A) spiral cleavage. 
B) radial cleavage. 
C) axial cleavage. 
D) polar cleavage. 
E) protocleavagE. 
A) spiral cleavage. 
B) radial cleavage. 
C) axial cleavage. 
D) polar cleavage. 
E) protocleavagE.

Question 3

Which one of the following features would indicate that an animal is not a deuterostome?

Accepted Answer

A) triploblastic 
B) blastopore becomes the anus 
C) dividing cells on a radius from the polar axis 
D) coelom partially lined with mesoderm 
E) identical twinning can occur 
A) triploblastic 
B) blastopore becomes the anus 
C) dividing cells on a radius from the polar axis 
D) coelom partially lined with mesoderm 
E) identical twinning can occur

Question 4

Eumetazoa can be subdivided into two principal branches based on _____.

Accepted Answer

The answer of Eumetazoa can be subdivided into two principal...

Question 5

Select the following phylum that includes animals that are unsegmented,acoelomate,and have a digestive cavity with a single opening.

Accepted Answer

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

Question 6

Which one of the following terms does not apply to the phylum Annelida?

Accepted Answer

A) bilateral symmetry 
B) triploblastic 
C) protostome 
D) indeterminate cleavage 
E) spiral cleavage 
A) bilateral symmetry 
B) triploblastic 
C) protostome 
D) indeterminate cleavage 
E) spiral cleavage

Question 7

Bilateral symmetrical animals have evolved three body cavity plans.Each of the following statements is correct with the exception of one.Select the exception.

Accepted Answer

A) Acoelomates have no body cavity. 
B) Coelomates have a body cavity lined with mesodermal cells. 
C) Coelomates have a fluid filled cavity that develops entirely within the mesoderm. 
D) Pseudocoelomates have a body cavity that is located between the ectoderm and the endoderm. 
A) Acoelomates have no body cavity. 
B) Coelomates have a body cavity lined with mesodermal cells. 
C) Coelomates have a fluid filled cavity that develops entirely within the mesoderm. 
D) Pseudocoelomates have a body cavity that is located between the ectoderm and the endoderm.

Question 8

Which one of the following statements about molecular systematics and its role in the classification of animals is false?

Accepted Answer

A) Clades consist of monophyletic taxa sharing the same gene sequences. 
B) Different molecules sometimes support different taxonomic relationships. 
C) Molecular data suggests that arthropods and annelids are part of the same clade. 
D) Molecular data suggests that a new group of "molting" animals,the Ecdysozoa,is monophyletic. 
E) Combining data from many different molecules gives the best picture of phylogenetic relationships. 
A) Clades consist of monophyletic taxa sharing the same gene sequences. 
B) Different molecules sometimes support different taxonomic relationships. 
C) Molecular data suggests that arthropods and annelids are part of the same clade. 
D) Molecular data suggests that a new group of "molting" animals,the Ecdysozoa,is monophyletic. 
E) Combining data from many different molecules gives the best picture of phylogenetic relationships.

Question 9

Which one of the following terms does not apply to the phylum Porifera?

Accepted Answer

A) Parazoa 
B) no true tissues 
C) asymmetry 
D) acoelomate 
E) diploblastic 
A) Parazoa 
B) no true tissues 
C) asymmetry 
D) acoelomate 
E) diploblastic

Question 10

Two outwardly dissimilar groups,the ____________ and the chordates,together with a few other small phyla,constitute the deuterostomes.

Accepted Answer

The answer of Two outwardly dissimilar groups,the ____________ and the...

Question 11

Segmentation is the subdivision of the body into segments or metameres.True segmentation is found in which of the following phyla selections?

Accepted Answer

A) Annelida,Mollusca,Arthropoda 
B) Echinodermata,Platyhelminthes,Cnidaria 
C) Mollusca,Chordata,Annelida 
D) Arthropoda,Chordata,Porifera 
E) Arthropoda,Annelida,Chordata 
A) Annelida,Mollusca,Arthropoda 
B) Echinodermata,Platyhelminthes,Cnidaria 
C) Mollusca,Chordata,Annelida 
D) Arthropoda,Chordata,Porifera 
E) Arthropoda,Annelida,Chordata

Question 12

Parazoa

Accepted Answer

A) are pseudocoelomates. 
B) exhibit bilateral symmetry. 
C) include Cnidaria and Ctenophora. 
D) exhibit primitive segmentation. 
E) have no true tissues. 
A) are pseudocoelomates. 
B) exhibit bilateral symmetry. 
C) include Cnidaria and Ctenophora. 
D) exhibit primitive segmentation. 
E) have no true tissues.

Question 13

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

Accepted Answer

A) radial cleavage 
B) indeterminate development 
C) circulatory system present 
D) diploblastic 
E) coelomate 
A) radial cleavage 
B) indeterminate development 
C) circulatory system present 
D) diploblastic 
E) coelomate

Question 14

In the animal subkingdom ______,the animals lack symmetry and possess neither tissues nor organs.

Accepted Answer

The answer of In the animal subkingdom ______,the animals lack...

Question 15

In a _____ circulatory system,circulation of blood is more controlled-the blood is moved faster and more efficiently than in other types of circulatory systems.

Accepted Answer

The answer of In a _____ circulatory system,circulation of blood...

Question 16

Which one of the following terms applies to the phylum Nematoda?

Accepted Answer

A) Parazoa 
B) radial cleavage 
C) diploblastic 
D) deuterostome 
E) pseudocoelomate 
A) Parazoa 
B) radial cleavage 
C) diploblastic 
D) deuterostome 
E) pseudocoelomate

Exam 32: Overview of Animal Diversity

Solid worms that lack a body cavity are known as

Protostomes develop through

Which one of the following features would indicate that an animal is not a deuterostome?

Eumetazoa can be subdivided into two principal branches based on _____.

Select the following phylum that includes animals that are unsegmented,acoelomate,and have a digestive cavity with a single opening.

Which one of the following terms does not apply to the phylum Annelida?

Bilateral symmetrical animals have evolved three body cavity plans.Each of the following statements is correct with the exception of one.Select the exception.

Which one of the following statements about molecular systematics and its role in the classification of animals is false?

Which one of the following terms does not apply to the phylum Porifera?

Two outwardly dissimilar groups,the ____________ and the chordates,together with a few other small phyla,constitute the deuterostomes.

Segmentation is the subdivision of the body into segments or metameres.True segmentation is found in which of the following phyla selections?

Parazoa

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

In the animal subkingdom ______,the animals lack symmetry and possess neither tissues nor organs.

In a _____ circulatory system,circulation of blood is more controlled-the blood is moved faster and more efficiently than in other types of circulatory systems.

Which one of the following terms applies to the phylum Nematoda?

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