Question 1

The common ancestor of sponges and other animals was probably:

Accepted Answer

A) unicellular. 
B) multicellular without tissues. 
C) multicellular with tissues but without organ systems. 
D) multicellular with tissues and a few organ systems. 
E) multicellular with tissues and many organ systems. 
A) unicellular. 
B) multicellular without tissues. 
C) multicellular with tissues but without organ systems. 
D) multicellular with tissues and a few organ systems. 
E) multicellular with tissues and many organ systems.

Question 2

A clam is a(n):

Accepted Answer

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

Question 3

The low energy demands of nematodes allow them to survive without a:

Accepted Answer

A) reproductive system. 
B) tubular gut. 
C) body cavity. 
D) skeleton. 
E) respiratory system. 
A) reproductive system. 
B) tubular gut. 
C) body cavity. 
D) skeleton. 
E) respiratory system.

Question 4

Which of the following animal phyla is distinguished by a lack of tissues?

Accepted Answer

A) echinoderms 
B) flatworms 
C) annelids 
D) roundworms 
E) sponges 
A) echinoderms 
B) flatworms 
C) annelids 
D) roundworms 
E) sponges

Question 5

How does the skeletal system of an arachnid differ from that of a cephalopod?

Accepted Answer

Arachnids have an exoskeleton

Question 6

Which cnidarian is the basis of an undersea habitat?

Accepted Answer

A) sea cucumber 
B) hydra 
C) anemone 
D) jellyfish 
E) coral 
A) sea cucumber 
B) hydra 
C) anemone 
D) jellyfish 
E) coral

Question 7

All animals with tissues have:

Accepted Answer

A) symmetrical bodies. 
B) bilateral symmetry. 
C) radial symmetry. 
D) two germ layers. 
E) three germ layers. 
A) symmetrical bodies. 
B) bilateral symmetry. 
C) radial symmetry. 
D) two germ layers. 
E) three germ layers.

Question 8

What characterizes a free-living flatworm?

Accepted Answer

A) tubular gut 
B) hooks 
C) cuticle 
D) eyespots 
E) coelom 
A) tubular gut 
B) hooks 
C) cuticle 
D) eyespots 
E) coelom

Question 9

Anemones have no:

Accepted Answer

A) endoderm. 
B) mesoderm. 
C) ectoderm. 
A) endoderm. 
B) mesoderm. 
C) ectoderm.

Question 10

The Trichinella worm, which causes trichinosis, is a(n)________.

Accepted Answer

The answer of The Trichinella worm, which causes trichinosis, is...

Question 11

Chordates and echinoderms are both protostomes. True or False?

Accepted Answer

A) True 
 B)False

Question 12

A cnidarian that builds a calcium carbonate skeleton is a(n):

Accepted Answer

A) oyster. 
B) clam. 
C) snail. 
D) coral. 
E) crab. 
A) oyster. 
B) clam. 
C) snail. 
D) coral. 
E) crab.

Question 13

The ________ is the embryonic germ layer that develops into nervous tissue.

Accepted Answer

The answer of The ________ is the embryonic germ layer...

Question 14

________ are characterized by having a pseudocoelom.

Accepted Answer

A) Roundworms 
B) Annelids 
C) Arthropods 
D) Chordates 
E) Cnidarians 
A) Roundworms 
B) Annelids 
C) Arthropods 
D) Chordates 
E) Cnidarians

Question 15

Charles Darwin wrote that members of the phylum ________ are particularly important for agriculture because they mix and aerate soil.

Accepted Answer

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

Question 16

Animals that have distinct right and left sides display ________ symmetry.

Accepted Answer

The answer of Animals that have distinct right and left...

Question 17

A jointed exoskeleton is a characteristic of ________.

Accepted Answer

The answer of A jointed exoskeleton is a characteristic of...

Question 18

Ecdysozoans:

Accepted Answer

A) have trochophore larva. 
B) include mollusks, annelids, and flatworms. 
C) have a special feeding structure. 
D) have a body cavity that forms from the digestive system. 
E) periodically shed their outer body covering. 
A) have trochophore larva. 
B) include mollusks, annelids, and flatworms. 
C) have a special feeding structure. 
D) have a body cavity that forms from the digestive system. 
E) periodically shed their outer body covering.

Question 19

Your job is to classify a newly discovered animal species. Your initial studies reveal that your specimen has tissues, organs, a head, and a coelom; has no 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 20

The skin and nervous tissues develop from which germ layer?

Accepted Answer

A) ectoderm 
B) endoderm 
C) mesoderm 
D) mesoglea 
E) protoplasm 
A) ectoderm 
B) endoderm 
C) mesoderm 
D) mesoglea 
E) protoplasm

Exam 23: Animal Diversity I: Invertebrates

The common ancestor of sponges and other animals was probably:

A clam is a(n):

The low energy demands of nematodes allow them to survive without a:

Which of the following animal phyla is distinguished by a lack of tissues?

How does the skeletal system of an arachnid differ from that of a cephalopod?

Which cnidarian is the basis of an undersea habitat?

All animals with tissues have:

What characterizes a free-living flatworm?

Anemones have no:

The Trichinella worm, which causes trichinosis, is a(n)________.

Chordates and echinoderms are both protostomes. True or False?

A cnidarian that builds a calcium carbonate skeleton is a(n):

The ________ is the embryonic germ layer that develops into nervous tissue.

________ are characterized by having a pseudocoelom.

Charles Darwin wrote that members of the phylum ________ are particularly important for agriculture because they mix and aerate soil.

Animals that have distinct right and left sides display ________ symmetry.

A jointed exoskeleton is a characteristic of ________.

Ecdysozoans:

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

The skin and nervous tissues develop from which germ layer?

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

The Continuity of Life: Cellular 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 Amidst 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

How Do Ecosystems Work

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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