Question 1

Touching a jellyfish can be a very painful experience whereas touching a comb jelly is not painful.Why is there a difference?

Accepted Answer

A) Nematocysts in ctenophores lack venom. 
B) Ctenophores have very reduced nematocysts that cannot penetrate human skin. 
C) Ctenphores do not possess nematocysts. 
D) Ctenophores only use nematocycts for feeding,not for defense. 
A) Nematocysts in ctenophores lack venom. 
B) Ctenophores have very reduced nematocysts that cannot penetrate human skin. 
C) Ctenphores do not possess nematocysts. 
D) Ctenophores only use nematocycts for feeding,not for defense.

Question 2

Animals with a body cavity located between the mesoderm and endoderm are ________.

Accepted Answer

The answer of Animals with a body cavity located between...

Question 3

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 4

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 5

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

Accepted Answer

A) protostome 
B) pseudocoelomate 
C) Parazoa 
D) diploblastic 
E) asymmetry 
A) protostome 
B) pseudocoelomate 
C) Parazoa 
D) diploblastic 
E) asymmetry

Question 6

Which one of the following applies to the phylum Ctenophora?

Accepted Answer

A) often bioluminescent marine animals 
B) protostome 
C) coelomate 
D) deuterostome 
E) Parazoa 
A) often bioluminescent marine animals 
B) protostome 
C) coelomate 
D) deuterostome 
E) Parazoa

Question 7

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 8

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 9

Select the following phylum that includes protostome animals that are segmented,bilaterally symmetric,and have a chitinous exoskeleton.

Accepted Answer

A) Arthropoda 
B) Annelida 
C) Mollusca 
D) Brachiopoda 
E) Platyhelminthes 
A) Arthropoda 
B) Annelida 
C) Mollusca 
D) Brachiopoda 
E) Platyhelminthes

Question 10

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 11

A scientist is studying some developing eggs from an ocean sample.The early embryos have divided only a few times,and all cells look identical.When the scientist carefully removes half the cells from an embryo,both clumps of cells are able to complete development,forming twins.The eggs can be identified as

Accepted Answer

A) deuterostomes. 
B) protostomes. 
C) crustaceans. 
D) cnidarians. 
E) echinoderms. 
A) deuterostomes. 
B) protostomes. 
C) crustaceans. 
D) cnidarians. 
E) echinoderms.

Question 12

What are the three animal phyla that dominate animal life on land?

Accepted Answer

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

Question 13

Of the following combination of statements about protostomes and deuterostomes,which choice is correct?

Accepted Answer

A) Protostomes are animals in which the mouth develops from the blastopore,and the anus or anal pore develops from the second opening.Deuterostomes are animals in which the anus develops from the blastopore and the mouth develops secondarily later in their development. 
B) Protostomes are animals in which the anus develops from the blastopore,and the mouth develops from the second opening.Deuterostomes are animals in which the anus develops from the blastopore and the mouth develops secondarily later in their development. 
C) Protostomes are animals in which the mouth develops from the blastopore,and the anus or anal pore develops from the second opening.Deuterostomes are animals in which the mouth develops from the blastopore and the anus develops secondarily later in their development. 
D) Protostomes are animals in which the mouth or anus develops from the blastopore,depending on the species.Deuterostomes are animals in which the mouth and anus develops from the blastopore,depending on the species. 
A) Protostomes are animals in which the mouth develops from the blastopore,and the anus or anal pore develops from the second opening.Deuterostomes are animals in which the anus develops from the blastopore and the mouth develops secondarily later in their development. 
B) Protostomes are animals in which the anus develops from the blastopore,and the mouth develops from the second opening.Deuterostomes are animals in which the anus develops from the blastopore and the mouth develops secondarily later in their development. 
C) Protostomes are animals in which the mouth develops from the blastopore,and the anus or anal pore develops from the second opening.Deuterostomes are animals in which the mouth develops from the blastopore and the anus develops secondarily later in their development. 
D) Protostomes are animals in which the mouth or anus develops from the blastopore,depending on the species.Deuterostomes are animals in which the mouth and anus develops from the blastopore,depending on the species.

Question 14

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

Accepted Answer

A) radial symmetry 
B) diploblastic 
C) coelomate 
D) Parazoa 
E) deuterostome 
A) radial symmetry 
B) diploblastic 
C) coelomate 
D) Parazoa 
E) deuterostome

Question 15

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

Accepted Answer

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

Question 16

The embryonic layer found only in bilaterally symmetrical eumetazoans is the ________.

Accepted Answer

The answer of The embryonic layer found only in bilaterally...

Question 17

In all deuterostomes,the cells divide parallel to and at right angles to the polar axis.This pattern is called ________.

Accepted Answer

The answer of In all deuterostomes,the cells divide parallel to...

Question 18

How could a biologist distinguish an acoel flatworm from a free living platyhelminth?

Accepted Answer

A) The acoel worm would be solid throughout,since it lacks a gut. 
B) The acoel worm would have a nervous system. 
C) The platyhelminth would have a more primitive gut and nervous system. 
D) Only the acoel is triploblastic. 
A) The acoel worm would be solid throughout,since it lacks a gut. 
B) The acoel worm would have a nervous system. 
C) The platyhelminth would have a more primitive gut and nervous system. 
D) Only the acoel is triploblastic.

Question 19

Select the phylum that includes deuterostome animals that are exclusively marine and have radial symmetry as adults.

Accepted Answer

A) Porifera 
B) Rotifera 
C) Echinodermata 
D) Chordata 
E) Cnidaria 
A) Porifera 
B) Rotifera 
C) Echinodermata 
D) Chordata 
E) Cnidaria

Question 20

Molecular data confirm that cnidarians branched off from the rest of animals before ________ evolved.

Accepted Answer

A) echinoderms 
B) Porifera 
C) mollusks 
D) bilateral symmetry 
E) arthropods 
A) echinoderms 
B) Porifera 
C) mollusks 
D) bilateral symmetry 
E) arthropods

Exam 32: Animal Diversity and the Evolution of Body Plans

Touching a jellyfish can be a very painful experience whereas touching a comb jelly is not painful.Why is there a difference?

Animals with a body cavity located between the mesoderm and endoderm are ________.

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.

Parazoa

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

Which one of the following applies to the phylum Ctenophora?

Protostomes develop through

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

Select the following phylum that includes protostome animals that are segmented,bilaterally symmetric,and have a chitinous exoskeleton.

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

What are the three animal phyla that dominate animal life on land?

Of the following combination of statements about protostomes and deuterostomes,which choice is correct?

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

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

The embryonic layer found only in bilaterally symmetrical eumetazoans is the ________.

In all deuterostomes,the cells divide parallel to and at right angles to the polar axis.This pattern is called ________.

How could a biologist distinguish an acoel flatworm from a free living platyhelminth?

Select the phylum that includes deuterostome animals that are exclusively marine and have radial symmetry as adults.

Molecular data confirm that cnidarians branched off from the rest of animals before ________ evolved.

The Science of Biology

The Nature of Molecules and the Properties of Water

The Chemical Building Blocks of Life

Cell Structure

Membranes

Energy and Metabolism

How Cells Harvest Energy

Photosynthesis

Cell Communication

How Cells Divide

Sexual Reproduction and Meiosis

Patterns of Inheritance

Chromosomes, mapping, and the Meiosisinheritance Connection

Dna: the Genetic Material

Genes and How They Work

Control of Gene Expression

Biotechnology

Genomics

Cellular Mechanisms of Development

Genes Within Populations

The Evidence for Evolution

The Origin of Species

Systematics,phylogenies,and Comparative Biology

Genome Evolution

The Origin and Diversity of Life

Viruses

Prokaryotes

Protists

Seedless Plants

Seed Plants

Fungi

Protostomes

Deuterostomes

Plant Form

Transport in Plants

Plant Nutrition and Soils

Plant Defense Responses

Sensory Systems in Plants

Plant Reproduction

The Animal Body and Principles of Regulation

The Nervous System

Sensory Systems

The Endocrine System

The Musculoskeletal System

The Digestive System

The Respiratory System

The Circulatory System

Osmotic Regulation and the Urinary System

The Immune System

The Reproductive System

Animal Development

Behavioral Biology

Ecology of Individuals and Populations

Community Ecology

Dynamics of Ecosystems

The Biosphere and Human Impacts

Conservation Biology

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