Question 1

Which of the following is a major problem for sessile animals?

Accepted Answer

A)  As adults, they are haploid. 
B)  They are unable to sexually reproduce. 
C)  They are limited in the variety of food they can consume. 
D)  They are not capable of locomotion during their lifetime. 
E)  They are unable to escape unfavorable environmental conditions. 
A)  As adults, they are haploid. 
B)  They are unable to sexually reproduce. 
C)  They are limited in the variety of food they can consume. 
D)  They are not capable of locomotion during their lifetime. 
E)  They are unable to escape unfavorable environmental conditions. E

Question 2

Determinate cleavage takes place in ____ and is characterized by a pattern of development where the ultimate fate of each cell is ____.

Accepted Answer

A)  deuterostomes; not fixed until late in the developmental process 
B)  protostomes; not fixed until late in the developmental process 
C)  deuterostomes; fixed early in the developmental process 
D)  protostomes; fixed early in the developmental process 
E)  coelomates; fixed early in the developmental process 
A)  deuterostomes; not fixed until late in the developmental process 
B)  protostomes; not fixed until late in the developmental process 
C)  deuterostomes; fixed early in the developmental process 
D)  protostomes; fixed early in the developmental process 
E)  coelomates; fixed early in the developmental process D

Question 3

List the main differences between protostomes and deuterostomes.

Accepted Answer

Protostomes: exhibit schizocoely, spiral & determinate cleavage, and having a blastopore that develops into the mouth. 
Deuterostomes: exhibit enterocoely, radial & indeterminate cleavage, and having a blastopore that develops into the anus.

Question 4

Describe the problems associated with a terrestrial existence and some of the adaptations of some animals for dealing with these problems.

Accepted Answer

Concepts to Consider: The main problem w

Question 5

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

Question 6

How is a pseudocoelom different from a coelom?

Accepted Answer

A)  A pseudocoelom is a cavity not found between tissues. 
B)  A pseudocoelom is a cavity fully lined by mesoderm. 
C)  A coelom is a cavity fully lined by endoderm. 
D)  A coelom is a cavity fully lined by mesoderm. 
E)  A coelom is a cavity between two tissue layers. 
A)  A pseudocoelom is a cavity not found between tissues. 
B)  A pseudocoelom is a cavity fully lined by mesoderm. 
C)  A coelom is a cavity fully lined by endoderm. 
D)  A coelom is a cavity fully lined by mesoderm. 
E)  A coelom is a cavity between two tissue layers.

Question 7

How do protostomes differ from deuterostomes?

Accepted Answer

A)  Protostomes are diploblastic. 
B)  Protostomes have radial symmetry. 
C)  Protostomes undergo spiral cleavage during development. 
D)  The first opening that develops in protostomes is the anus. 
E)  Protostomes undergo indeterminate cleavage during development. 
A)  Protostomes are diploblastic. 
B)  Protostomes have radial symmetry. 
C)  Protostomes undergo spiral cleavage during development. 
D)  The first opening that develops in protostomes is the anus. 
E)  Protostomes undergo indeterminate cleavage during development.

Question 8

Which statement about echinoderms is FALSE?

Accepted Answer

A)  They develop as deuterostomes. 
B)  They fall within the group Bilateria. 
C)  They show evidence of segmentation. 
D)  The fall on the eumetazoan branch of animals. 
E)  They fall within the group Deuterostomia. 
A)  They develop as deuterostomes. 
B)  They fall within the group Bilateria. 
C)  They show evidence of segmentation. 
D)  The fall on the eumetazoan branch of animals. 
E)  They fall within the group Deuterostomia.

Question 9

Which statement about bilateral symmetry is FALSE?

Accepted Answer

A)  Bilateral symmetry evolved in cnidarians. 
B)  Bilateral animals tend to have cephalization. 
C)  Bilaterally symmetrical animals has three axes. 
D)  Bilateral symmetry animals have a mesoderm. 
E)  Animals with bilateral symmetry have dorsal and ventral surfaces. 
A)  Bilateral symmetry evolved in cnidarians. 
B)  Bilateral animals tend to have cephalization. 
C)  Bilaterally symmetrical animals has three axes. 
D)  Bilateral symmetry animals have a mesoderm. 
E)  Animals with bilateral symmetry have dorsal and ventral surfaces.

Question 10

If adult sponges are sessile, why can they still be classified as animals?

Accepted Answer

A)  Sponge larvae are motile. 
B)  Sponges have beating flagella. 
C)  Sponges have an organ system. 
D)  Sponges have bilateral body symmetry.s 
E)  Sponges have a central nervous system. 
A)  Sponge larvae are motile. 
B)  Sponges have beating flagella. 
C)  Sponges have an organ system. 
D)  Sponges have bilateral body symmetry.s 
E)  Sponges have a central nervous system.

Question 11

The term "cleavage" refers to a series of meiotic cell divisions. 
____________________

Accepted Answer

A) True 
 B)False

Question 12

The first air-breathing land animals were:

Accepted Answer

A)  snails. 
B)  reptiles. 
C)  arthropods. 
D)  amphibians. 
E)  vertebrates. 
A)  snails. 
B)  reptiles. 
C)  arthropods. 
D)  amphibians. 
E)  vertebrates.

Question 13

Cells of the blastula undergo ____, a process that forms and segregates the three germ layers.

Accepted Answer

A)  morphogenesis 
B)  development 
C)  gastrulation 
D)  cleavage 
E)  division 
A)  morphogenesis 
B)  development 
C)  gastrulation 
D)  cleavage 
E)  division

Question 14

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 atmosphere 
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 atmosphere

Question 15

The common ancestor of all animals is/are the:

Accepted Answer

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

Question 16

The nervous system develops from the endoderm . 
____________________

Accepted Answer

A) True 
 B)False

Question 17

Because it is an enclosed compartment of fluid under pressure, the coelom can serve as a _____, which shapes the body of soft animals.

Accepted Answer

A)  food vessel 
B)  pressure balloon 
C)  hydrostatic skeleton 
D)  cartilaginous skeleton 
E)  storage compartment 
A)  food vessel 
B)  pressure balloon 
C)  hydrostatic skeleton 
D)  cartilaginous skeleton 
E)  storage compartment

Question 18

Which statement best supports why animals most likely evolved in the ocean?

Accepted Answer

A)  The ocean water provided buoyancy. 
B)  They did not require a skeleton for support. 
C)  Internal fluid and salt balance was easy to maintain. 
D)  Reproduction was independent of internal fertilization. 
E)  The changeable temperature facilitated natural selection. 
A)  The ocean water provided buoyancy. 
B)  They did not require a skeleton for support. 
C)  Internal fluid and salt balance was easy to maintain. 
D)  Reproduction was independent of internal fertilization. 
E)  The changeable temperature facilitated natural selection.

Question 19

The lining of the digestive tube is formed from:

Accepted Answer

A)  endoderm. 
B)  ectoderm. 
C)  germ cells. 
D)  mesoderm. 
E)  pseudoderm. 
A)  endoderm. 
B)  ectoderm. 
C)  germ cells. 
D)  mesoderm. 
E)  pseudoderm.

Question 20

In deuterostomes, the blastopore develops into the mouth . 
____________________

Accepted Answer

A) True 
 B)False

Exam 30: An Introduction to Animal Diversity

Which of the following is a major problem for sessile animals?

Determinate cleavage takes place in ____ and is characterized by a pattern of development where the ultimate fate of each cell is ____.

List the main differences between protostomes and deuterostomes.

Describe the problems associated with a terrestrial existence and some of the adaptations of some animals for dealing with these problems.

What are the two clades of the protostomes?

How is a pseudocoelom different from a coelom?

How do protostomes differ from deuterostomes?

Which statement about echinoderms is FALSE?

Which statement about bilateral symmetry is FALSE?

If adult sponges are sessile, why can they still be classified as animals?

The term "cleavage" refers to a series of meiotic cell divisions. ____________________

The first air-breathing land animals were:

Cells of the blastula undergo ____, a process that forms and segregates the three germ layers.

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

The common ancestor of all animals is/are the:

The nervous system develops from the endoderm . ____________________

Because it is an enclosed compartment of fluid under pressure, the coelom can serve as a _____, which shapes the body of soft animals.

Which statement best supports why animals most likely evolved in the ocean?

The lining of the digestive tube is formed from:

In deuterostomes, the blastopore develops into the mouth . ____________________

A View of Life

Atoms and Molecules the Chemical Basis of Life

The Chemistry of Life Organic Compounds

Organization of the Cell

Biological Membranes

Cell Communication

Energy and Metabolism

How Cells Make Atp Energy-Releasing Pathways

Photosynthesis Capturing Light Energy

Chromosomes, Mitosis, and Meiosis

The Basic Principles of Heredity

Dna the Carrier of Genetic Information

Gene Expression

Gene Regulation

Dna Technology and Genomics

Human Genetics and the Human Genome

Developmental Genetics

Introduction to Darwinian Evolution

Evolutionary Change in Populations

Speciation and Macroevolution

The Origin and Evolutionary History of Life

The Evolution of Primates

Understanding Diversity Systematics

Viruses and Subviral Agents

Bacteria and Archaea

Protists

Seedless Plants

Seed Plants

The Fungi

Sponges, Cnidarians, Ctenophores, and Protostomes

The Deuterostomes

Plant Structure Growth and Development

Leaf Structure and Function

Stem Structure and Transport

Roots and Mineral Nutrition

Reproduction in Flowering Plants

Plant Developmental Responses to External and Internal Signals

Animal Structure and Function an Introduction

Protection Support and Movement

Neural Signaling

Neural Regulation

Sensory Systems

Internal Transport

The Immune System Internal Defense

Gas Exchange

Processing Food and Nutrition

Osmoregulation and Disposal of Metabolic Wastes

Endocrine Regulation

Reproduction

Animal Development

Animal Behavior

Introduction to Ecology Population Ecology

Community Ecology

Ecosystems and the Biosphere

Ecology and the Geography of Life

Biological Diversity and Conservation Biology

Filters

Determinate cleavage takes place in and is characterized by a pattern of development where the ultimate fate of each cell is .