Question 1

Which of the following genes were similar in the last common ancestor of all bilateral animals?

Accepted Answer

A)  WNT genes 
B)  BRCA1 genes 
C)  Hox genes 
D)  PIWI genes 
E)  HBA1 genes 
A)  WNT genes 
B)  BRCA1 genes 
C)  Hox genes 
D)  PIWI genes 
E)  HBA1 genes

Question 2

Which of the following protostomes does NOT have a coelom?

Accepted Answer

A)  Oysters 
B)  Slugs 
C)  Leeches 
D)  Tapeworms 
E)  Hookworms 
A)  Oysters 
B)  Slugs 
C)  Leeches 
D)  Tapeworms 
E)  Hookworms

Question 3

Which of the following regarding the coelom is NOT a correct statement?

Accepted Answer

A)  It functions as an endoskeleton. 
B)  It shapes the body of soft animals. 
C)  Its evolution into various shapes and divisions provided the opportunity for animals to become specialized (e.g., in swimming, crawling, or walking). 
D)  It is an enclosed compartment (or series of compartments) of fluid under pressure. 
E)  Its evolution provided a space where internal organs could develop and function. 
A)  It functions as an endoskeleton. 
B)  It shapes the body of soft animals. 
C)  Its evolution into various shapes and divisions provided the opportunity for animals to become specialized (e.g., in swimming, crawling, or walking). 
D)  It is an enclosed compartment (or series of compartments) of fluid under pressure. 
E)  Its evolution provided a space where internal organs could develop and function.

Question 4

Which statement about the development of a coelom is FALSE?

Accepted Answer

A)  It requires animals to have either two or three tissue layers. 
B)  It requires the endoderm to be covered by mesoderm. 
C)  It occurs in protostomes and deuterostomes. 
D)  It may occur by random. 
E)  It is a fluid-filled cavity. 
A)  It requires animals to have either two or three tissue layers. 
B)  It requires the endoderm to be covered by mesoderm. 
C)  It occurs in protostomes and deuterostomes. 
D)  It may occur by random. 
E)  It is a fluid-filled cavity.

Question 5

The head end of an animal is known as its:

Accepted Answer

A)  posterior end. 
B)  ventral end. 
C)  inferior end. 
D)  lateral end. 
E)  anterior end. 
A)  posterior end. 
B)  ventral end. 
C)  inferior end. 
D)  lateral end. 
E)  anterior end.

Question 6

Hox genes have been identified in all bilaterally symmetric animal groups.

Accepted Answer

A) True 
 B)False

Question 7

The body of a bilaterally symmetrical animal can be divided into two equivalent halves by more than one plane.

Accepted Answer

A) True 
 B)False

Question 8

Which is a characteristic of ribbon worms and flatworms?

Accepted Answer

A)  They are coelomates. 
B)  They are acoelomates. 
C)  They have two germ layers. 
D)  They are pseudocoelomates. 
E)  They have three germ layers. 
A)  They are coelomates. 
B)  They are acoelomates. 
C)  They have two germ layers. 
D)  They are pseudocoelomates. 
E)  They have three germ layers.

Question 9

Which of the following protostomes has bristles, called setae, which provide traction during crawling?

Accepted Answer

A)  Tapeworms 
B)  Snails 
C)  Sandworms 
D)  Squids 
E)  Ribbon worms 
A)  Tapeworms 
B)  Snails 
C)  Sandworms 
D)  Squids 
E)  Ribbon worms

Question 10

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 11

Which of the following is NOT a correct statement regarding segmentation?

Accepted Answer

A)  It enables a series of body structures and compartments. 
B)  It allows various parts of the body to become specialized to perform specific functions. 
C)  It is an example of heteroplasy. 
D)  Segmented animals are found within each of the three major clades of bilateral animals. 
E)  Molecular data suggest that segmentation evolved independently three times. 
A)  It enables a series of body structures and compartments. 
B)  It allows various parts of the body to become specialized to perform specific functions. 
C)  It is an example of heteroplasy. 
D)  Segmented animals are found within each of the three major clades of bilateral animals. 
E)  Molecular data suggest that segmentation evolved independently three times.

Question 12

The nervous system develops from the endoderm.

Accepted Answer

A) True 
 B)False

Question 13

Which of the following phyla is a deuterostome?

Accepted Answer

A)  Annelids 
B)  Mollusks 
C)  Flatworms 
D)  Arthropods 
E)  Echinoderms 
A)  Annelids 
B)  Mollusks 
C)  Flatworms 
D)  Arthropods 
E)  Echinoderms

Question 14

The epidermis of a nematode is derived from the:

Accepted Answer

A)  endoderm. 
B)  mesoderm. 
C)  ectoderm. 
D)  epithelium. 
E)  mesenchyme. 
A)  endoderm. 
B)  mesoderm. 
C)  ectoderm. 
D)  epithelium. 
E)  mesenchyme.

Question 15

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.

Question 16

An example of an animal that is a metazoan is a sponge.

Accepted Answer

A) True 
 B)False

Question 17

The main structural protein in the extracellular matrix and an important shared derived characteristic of animals is:

Accepted Answer

A)  cellulose. 
B)  collagen. 
C)  tissue. 
D)  bones. 
E)  chitin. 
A)  cellulose. 
B)  collagen. 
C)  tissue. 
D)  bones. 
E)  chitin.

Question 18

Which of the following characteristics about animals is FALSE ?

Accepted Answer

A)  Animals are consumers. 
B)  Animals have specialized cells. 
C)  Animals cannot respond to stimuli. 
D)  Animals are multicellular eukaryotes. 
E)  Animals have a life cycle of development. 
A)  Animals are consumers. 
B)  Animals have specialized cells. 
C)  Animals cannot respond to stimuli. 
D)  Animals are multicellular eukaryotes. 
E)  Animals have a life cycle of development.

Question 19

As bilateral symmetry evolved, natural selection led to which of the following?

Accepted Answer

A)  Noogenesis 
B)  Organogenesis 
C)  Abiogenesis 
D)  Cephalization 
E)  Cognition 
A)  Noogenesis 
B)  Organogenesis 
C)  Abiogenesis 
D)  Cephalization 
E)  Cognition

Question 20

Match between columns
                        Premises: spiral cleavage

Accepted Answer

The Answer of deuterostomes and protostomes is...

Exam 30: An Introduction to Animal Diversity

Which of the following genes were similar in the last common ancestor of all bilateral animals?

Which of the following protostomes does NOT have a coelom?

Which of the following regarding the coelom is NOT a correct statement?

Which statement about the development of a coelom is FALSE?

The head end of an animal is known as its:

Hox genes have been identified in all bilaterally symmetric animal groups.

The body of a bilaterally symmetrical animal can be divided into two equivalent halves by more than one plane.

Which is a characteristic of ribbon worms and flatworms?

Which of the following protostomes has bristles, called setae, which provide traction during crawling?

How is a pseudocoelom different from a coelom?

Which of the following is NOT a correct statement regarding segmentation?

The nervous system develops from the endoderm.

Which of the following phyla is a deuterostome?

The epidermis of a nematode is derived from the:

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

An example of an animal that is a metazoan is a sponge.

The main structural protein in the extracellular matrix and an important shared derived characteristic of animals is:

Which of the following characteristics about animals is FALSE ?

As bilateral symmetry evolved, natural selection led to which of the following?

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

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