Question 1

The only animals that lack tissues are:

Accepted Answer

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

Question 2

The organism shown here is a(n):

Accepted Answer

A) annelid. 
B) fluke. 
C) cephalopod. 
D) gastropod. 
E) arachnid. 
A) annelid. 
B) fluke. 
C) cephalopod. 
D) gastropod. 
E) arachnid.

Question 3

A snail is a(n):

Accepted Answer

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

Question 4

Organisms that are radially symmetrical have ________ embryonic germ layers.

Accepted Answer

A) two 
B) three 
C) four 
D) five 
E) six 
A) two 
B) three 
C) four 
D) five 
E) six

Question 5

Which of the following phyla contains animals that reproduce asexually?

Accepted Answer

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

Question 6

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 7

An arthropod exoskeleton is composed of:

Accepted Answer

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

Question 8

An arthropod embryo has ________ germ layer(s).

Accepted Answer

A) no 
B) one 
C) two 
D) three 
E) four 
A) no 
B) one 
C) two 
D) three 
E) four

Question 9

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

Accepted Answer

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

Question 10

Animal cells lack a cell wall. True or False?

Accepted Answer

A) True 
 B)False

Question 11

Most animal phyla are radially symmetrical. True or False?

Accepted Answer

A) True 
 B)False

Question 12

Which of the following animals are arachnids?

Accepted Answer

A) spiders 
B) wasps 
C) grasshoppers 
D) flukes 
E) beetles 
A) spiders 
B) wasps 
C) grasshoppers 
D) flukes 
E) beetles

Question 13

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

Accepted Answer

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

Question 14

Which of the following animals uses a radula to scrape food into its mouth?

Accepted Answer

A) octopus 
B) starfish 
C) scallop 
D) rat 
E) snail 
A) octopus 
B) starfish 
C) scallop 
D) rat 
E) snail

Question 15

How does the circulatory system of an annelid differ from the circulatory system of a gastropod?

Accepted Answer

Annelids have a clos

Question 16

A sea urchin is a member of the phylum:

Accepted Answer

A) Echinodermata. 
B) Mollusca. 
C) Annelida. 
D) Platyhelminthes. 
E) Arthropoda. 
A) Echinodermata. 
B) Mollusca. 
C) Annelida. 
D) Platyhelminthes. 
E) Arthropoda.

Question 17

Insects are:

Accepted Answer

A) annelids. 
B) arthropods. 
C) mollusks. 
D) beetles. 
E) arachnids. 
A) annelids. 
B) arthropods. 
C) mollusks. 
D) beetles. 
E) arachnids.

Question 18

Members of the phylum ________ are characterized by having tube feet.

Accepted Answer

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

Question 19

In the various cnidarian species:

Accepted Answer

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

Question 20

The venomous sea wasp is classified in the phylum:

Accepted Answer

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

Exam 23: Animal Diversity I: Invertebrates

The only animals that lack tissues are:

The organism shown here is a(n):

A snail is a(n):

Organisms that are radially symmetrical have ________ embryonic germ layers.

Which of the following phyla contains animals that reproduce asexually?

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?

An arthropod exoskeleton is composed of:

An arthropod embryo has ________ germ layer(s).

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

Animal cells lack a cell wall. True or False?

Most animal phyla are radially symmetrical. True or False?

Which of the following animals are arachnids?

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

Which of the following animals uses a radula to scrape food into its mouth?

How does the circulatory system of an annelid differ from the circulatory system of a gastropod?

A sea urchin is a member of the phylum:

Insects are:

Members of the phylum ________ are characterized by having tube feet.

In the various cnidarian species:

The venomous sea wasp is classified in the phylum:

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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