Question 1

An arthropod exoskeleton is composed of

Accepted Answer

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

Question 2

The only animals that lack tissues are

Accepted Answer

A)  chytrids. 
B)  sponges. 
C)  chordates. 
D)  nematodes. 
E)  cnidarians. 
A)  chytrids. 
B)  sponges. 
C)  chordates. 
D)  nematodes. 
E)  cnidarians.

Question 3

Spiders belong to the

Accepted Answer

A)  chordates. 
B)  arthropods. 
C)  mollusks. 
D)  echinoderms. 
E)  cnidarians. 
A)  chordates. 
B)  arthropods. 
C)  mollusks. 
D)  echinoderms. 
E)  cnidarians.

Question 4

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

Accepted Answer

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

Question 5

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

Accepted Answer

A)  Platyhelminthes 
B)  Mollusca 
C)  Cnidaria 
D)  Nematoda 
E)  Echinodermata 
A)  Platyhelminthes 
B)  Mollusca 
C)  Cnidaria 
D)  Nematoda 
E)  Echinodermata

Question 6

Which invertebrate animal group is characterized by having a closed circulatory system?

Accepted Answer

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

Question 7

Parasitic tapeworms are members of the phylum

Accepted Answer

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

Question 8

Animals that have no body cavity between the digestive system and the body wall are in terms of body plan.

Accepted Answer

The answer of Animals that have no body cavity between...

Question 9

Giant squids are classified as

Accepted Answer

A)  arthropods. 
B)  mollusks. 
C)  chordates. 
D)  platyhelminthes. 
E)  echinoderms. 
A)  arthropods. 
B)  mollusks. 
C)  chordates. 
D)  platyhelminthes. 
E)  echinoderms.

Question 10

Your job is to classify a newly discovered animal species. Your initial studies reveal that your specimen has tissues but lacks organs; has no head, body cavity, or segmentation; and has radial 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

A multicellular organism that lacks cell walls and obtains energy by eating other organisms is a(n)

Accepted Answer

A)  chytrid. 
B)  plant. 
C)  fungus. 
D)  alga. 
E)  animal. 
A)  chytrid. 
B)  plant. 
C)  fungus. 
D)  alga. 
E)  animal.

Question 12

All animal cells lack a .

Accepted Answer

The answer of All animal cells lack a ....

Question 13

Within the mollusks, only the cephalopods have a

Accepted Answer

A)  hinged shell. 
B)  radula. 
C)  closed circulatory system. 
D)  coelom. 
E)  tubular gut. 
A)  hinged shell. 
B)  radula. 
C)  closed circulatory system. 
D)  coelom. 
E)  tubular gut.

Question 14

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

Accepted Answer

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

Question 15

What causes schistosomiasis, a devastating disease that affects about 200 million people in tropical regions?

Accepted Answer

A)  Trichinella 
B)  Amoebas 
C)  Echinoderms 
D)  Parasitic flatworms called blood flukes 
E)  Nematodes 
A)  Trichinella 
B)  Amoebas 
C)  Echinoderms 
D)  Parasitic flatworms called blood flukes 
E)  Nematodes

Question 16

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

Accepted Answer

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

Question 17

The leeches used by doctors to prevent blood clotting and stimulate the growth of blood vessels in patients recovering from reconstructive surgery are members of the phylum

Accepted Answer

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

Question 18

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

Accepted Answer

A)  Roundworms 
B)  Annelids 
C)  Echinoderms 
D)  Flatworms 
E)  Sponges 
A)  Roundworms 
B)  Annelids 
C)  Echinoderms 
D)  Flatworms 
E)  Sponges

Question 19

Ecdysozoans

Accepted Answer

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

Question 20

Which of the following characteristics is often associated with animals that are radially symmetrical?

Accepted Answer

A)  Sessile or otherwise nonmobile 
B)  Mobility 
C)  Gastrovascular cavity 
D)  Cephalization 
E)  Mesoderm 
A)  Sessile or otherwise nonmobile 
B)  Mobility 
C)  Gastrovascular cavity 
D)  Cephalization 
E)  Mesoderm

Exam 24: Animal Diversity I: Invertebrates

An arthropod exoskeleton is composed of

The only animals that lack tissues are

Spiders belong to the

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

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

Which invertebrate animal group is characterized by having a closed circulatory system?

Parasitic tapeworms are members of the phylum

Animals that have no body cavity between the digestive system and the body wall are in terms of body plan.

Giant squids are classified as

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

A multicellular organism that lacks cell walls and obtains energy by eating other organisms is a(n)

All animal cells lack a .

Within the mollusks, only the cephalopods have a

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

What causes schistosomiasis, a devastating disease that affects about 200 million people in tropical regions?

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

The leeches used by doctors to prevent blood clotting and stimulate the growth of blood vessels in patients recovering from reconstructive surgery are members of the phylum

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

Ecdysozoans

Which of the following characteristics is often associated with animals that are radially symmetrical?

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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