Question 1

A clam is a(n)

Accepted Answer

A)  arthropod. 
B)  arachnid. 
C)  echinoderm. 
D)  mollusk. 
E)  chordate. 
A)  arthropod. 
B)  arachnid. 
C)  echinoderm. 
D)  mollusk. 
E)  chordate. D

Question 2

The major difference between protostomes and deuterostomes is the

Accepted Answer

A)  way the body cavity forms. 
B)  type of body symmetry. 
C)  presence or absence of cephalization. 
D)  presence or absence of tissues. 
E)  presence or absence of a coelom. 
A)  way the body cavity forms. 
B)  type of body symmetry. 
C)  presence or absence of cephalization. 
D)  presence or absence of tissues. 
E)  presence or absence of a coelom. A

Question 3

Hydra, anemones, and jellyfish are in the phylum

Accepted Answer

A)  Flagellates. 
B)  Cnidaria. 
C)  Porifera. 
D)  Platyhelminthes. 
E)  Protista. 
A)  Flagellates. 
B)  Cnidaria. 
C)  Porifera. 
D)  Platyhelminthes. 
E)  Protista. B

Question 4

Between the organs and the body wall, complex animals have a body cavity called a

Accepted Answer

A)  coelom. 
B)  thorax. 
C)  mesoderm. 
D)  mesoglea. 
E)  cnidarian. 
A)  coelom. 
B)  thorax. 
C)  mesoderm. 
D)  mesoglea. 
E)  cnidarian.

Question 5

In the various cnidarian species

Accepted Answer

A)  some live as polyps, some as medusae, and some as both in different stages. 
B)  all have medusae as the juvenile stage and polyps as the adult stage. 
C)  all live as medusae. 
D)  all have polyps as the juvenile stage and medusae as the adult stage. 
E)  all live as polyps. 
A)  some live as polyps, some as medusae, and some as both in different stages. 
B)  all have medusae as the juvenile stage and polyps as the adult stage. 
C)  all live as medusae. 
D)  all have polyps as the juvenile stage and medusae as the adult stage. 
E)  all live as polyps.

Question 6

If someone discovered a new compound that stops metamorphosis at the larval stage, what would be the benefits and drawbacks of this pesticide for humans?

Accepted Answer

On the positive side, the organisms woul

Question 7

In the animal kingdom, cephalization is

Accepted Answer

A)  development of eyes at the anterior end of the organism. 
B)  the ability to respond rapidly to external stimuli. 
C)  concentration of sensory structures in the head. 
D)  evolutionary development of a netlike system of veins. 
E)  development of a body that has paired structures forming a side- to- side mirror image. 
A)  development of eyes at the anterior end of the organism. 
B)  the ability to respond rapidly to external stimuli. 
C)  concentration of sensory structures in the head. 
D)  evolutionary development of a netlike system of veins. 
E)  development of a body that has paired structures forming a side- to- side mirror image.

Question 8

A snail is a(n)

Accepted Answer

A)  chordate. 
B)  arthropod. 
C)  nematode. 
D)  mollusk. 
E)  echinoderm. 
A)  chordate. 
B)  arthropod. 
C)  nematode. 
D)  mollusk. 
E)  echinoderm.

Question 9

If motility is considered a characteristic of animals, then why are stationary creatures such as sponges still considered to be animals?

Accepted Answer

They have a larval stage that

Question 10

Your job is to classify a newly discovered animal species. Your initial studies reveal that your specimen has tissues, organs, and a head; has no body cavity or segmentation; and has bilateral symmetry. To what phylum does this animal belong?

Accepted Answer

A)  Cnidaria 
B)  Mollusca 
C)  Annelida 
D)  Platyhelminthes 
E)  Porifera 
A)  Cnidaria 
B)  Mollusca 
C)  Annelida 
D)  Platyhelminthes 
E)  Porifera

Question 11

The skin and nervous tissues develop from which germ layer?

Accepted Answer

A)  Endoderm 
B)  Mesoglea 
C)  Mesoderm 
D)  Ectoderm 
E)  Protoplasm 
A)  Endoderm 
B)  Mesoglea 
C)  Mesoderm 
D)  Ectoderm 
E)  Protoplasm

Question 12

Animal cells lack a cell wall.

Accepted Answer

A) True 
 B)False

Question 13

Most animal phyla are radially symmetrical.

Accepted Answer

A) True 
 B)False

Question 14

The endoskeleton of an echinoderm is composed of

Accepted Answer

A)  lignan. 
B)  cellulose. 
C)  calcium carbonate. 
D)  chitin. 
E)  silica. 
A)  lignan. 
B)  cellulose. 
C)  calcium carbonate. 
D)  chitin. 
E)  silica.

Question 15

Sea stars (starfish) are bilaterally symmetrical at one time in their life cycle.

Accepted Answer

A) True 
 B)False

Question 16

Flatworms lack

Accepted Answer

A)  a reproductive system. 
B)  a respiratory system. 
C)  a digestive cavity. 
D)  a nervous system. 
E)  the ability to move. 
A)  a reproductive system. 
B)  a respiratory system. 
C)  a digestive cavity. 
D)  a nervous system. 
E)  the ability to move.

Question 17

The currents of water (containing food) that pass through a sponge are maintained by

Accepted Answer

A)  a water- vascular system. 
B)  ganglia. 
C)  the osculum. 
D)  collar cells. 
E)  medusae. 
A)  a water- vascular system. 
B)  ganglia. 
C)  the osculum. 
D)  collar cells. 
E)  medusae.

Question 18

A hemocoel or blood cavity is found in or associated with

Accepted Answer

A)  acoelomates. 
B)  sponges. 
C)  all animals. 
D)  cephalopods. 
E)  an open circulatory system. 
A)  acoelomates. 
B)  sponges. 
C)  all animals. 
D)  cephalopods. 
E)  an open circulatory system.

Question 19

A(n) provides support and protection to arthropods.

Accepted Answer

A)  epidermis 
B)  exoskeleton 
C)  cytoskeleton 
D)  shell 
E)  hydrostatic skeleton 
A)  epidermis 
B)  exoskeleton 
C)  cytoskeleton 
D)  shell 
E)  hydrostatic skeleton

Question 20

Worms with a well- developed circulatory system (including five pairs of hearts) are

Accepted Answer

A)  annelids. 
B)  eels. 
C)  nematodes. 
D)  platyhelminths. 
E)  echinoderms. 
A)  annelids. 
B)  eels. 
C)  nematodes. 
D)  platyhelminths. 
E)  echinoderms.

Exam 24: Animal Diversity I: Invertebrates

A clam is a(n)

The major difference between protostomes and deuterostomes is the

Hydra, anemones, and jellyfish are in the phylum

Between the organs and the body wall, complex animals have a body cavity called a

In the various cnidarian species

If someone discovered a new compound that stops metamorphosis at the larval stage, what would be the benefits and drawbacks of this pesticide for humans?

In the animal kingdom, cephalization is

A snail is a(n)

If motility is considered a characteristic of animals, then why are stationary creatures such as sponges still considered to be animals?

Your job is to classify a newly discovered animal species. Your initial studies reveal that your specimen has tissues, organs, and a head; has no body cavity or segmentation; and has bilateral symmetry. To what phylum does this animal belong?

The skin and nervous tissues develop from which germ layer?

Animal cells lack a cell wall.

Most animal phyla are radially symmetrical.

The endoskeleton of an echinoderm is composed of

Sea stars (starfish) are bilaterally symmetrical at one time in their life cycle.

Flatworms lack

The currents of water (containing food) that pass through a sponge are maintained by

A hemocoel or blood cavity is found in or associated with

A(n) provides support and protection to arthropods.

Worms with a well- developed circulatory system (including five pairs of hearts) are

An Introduction to Life on Earth

Atoms, Molecules, and Life

Biological Molecules

Cell Structure and Function

Cell Membrane Structure and Function

Energy Flow in the Life of a Cell

Capturing Solar Energy: Photosynthesis

Harvesting Energy: Glycolysis and Cellular Respiration

Cellular Reproduction

Meiosis: the Basis of Sexual Reproduction

Patterns of Inheritance

Dna: the Molecule of Heredity

Gene Expression and Regulation

Biotechnology

Principles of Evolution

How Populations Evolve

The Origin of Species

The History of Life

Systematics: Seeking Order Amid Diversity

The Diversity of Prokaryotes and Viruses

The Diversity of Protists

The Diversity of Plants

The Diversity of Fungi

Animal Diversity II: Vertebrates

Animal Behavior

Population Growth and Regulation

Community Interactions

Energy Flow and Nutrient Cycling in Ecosystems

Earths Diverse Ecosystems

Conserving Earths Biodiversity

Homeostasis and the Organization of the Animal Body

Circulation

Respiration

Nutrition and Digestion

The Urinary System

Defenses Against Disease

Chemical Control of the Animal Body: the Endocrine System

The Nervous System

The Senses

Action and Support: the Muscles and Skeleton

Animal Reproduction

Animal Development

Plant Anatomy and Nutrient Transport

Plant Reproduction and Development

Plant Responses to the Environment

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