Question 1

Oysters are classified in 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 2

The organism shown here is a(n)

Accepted Answer

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

Question 3

The organism in the illustration has

Accepted Answer

A)  no coelom. 
B)  a pseudocoelom. 
C)  a true coelom. 
A)  no coelom. 
B)  a pseudocoelom. 
C)  a true coelom.

Question 4

Ecdysozoans

Accepted Answer

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

Question 5

The _________are the simplest animals to have an excretory system. (Hint: This system consists of cilia beating within canals.)

Accepted Answer

The answer of The _________are the simplest animals to have...

Question 6

A hemocoel or blood cavity is found in or associated with

Accepted Answer

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

Question 7

Flatworms have a coelom that is only partially surrounded with mesoderm.

Accepted Answer

A) True 
 B)False

Question 8

The only animals that lack tissues are

Accepted Answer

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

Question 9

Which germ layer gives rise to the muscle layer of the uterus?

Accepted Answer

A)  Mesoderm 
B)  Ectoderm 
C)  Endoderm 
A)  Mesoderm 
B)  Ectoderm 
C)  Endoderm

Question 10

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 11

_________are characterized by having a pseudocoelom.

Accepted Answer

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

Question 12

Cephalopods are the only mollusks that have a closed circulatory system.

Accepted Answer

A) True 
 B)False

Question 13

In the animal kingdom, cephalization is

Accepted Answer

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

Question 14

All animal cells lack a _____.

Accepted Answer

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

Question 15

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

Accepted Answer

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

Question 16

All animals with tissues have

Accepted Answer

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

Question 17

Flatworms that contain both male and female reproductive organs in the same individual are called_________ .

Accepted Answer

The answer of Flatworms that contain both male and female...

Question 18

A hemocoel is part of an open circulatory system.

Accepted Answer

A) True 
 B)False

Question 19

Explain why natural selection would have favored a closed circulatory system for cephalopods.

Accepted Answer

A closed circulatory system distributes

Question 20

What distinguishes a free-living flatworm from other organisms?

Accepted Answer

A)  A cuticle 
B)  A coelom 
C)  Eyespots 
D)  A tubular gut 
E)  Hooks 
A)  A cuticle 
B)  A coelom 
C)  Eyespots 
D)  A tubular gut 
E)  Hooks

Exam 24: Animal Diversity I: Invertebrates

Oysters are classified in the phylum

The organism shown here is a(n)

The organism in the illustration has

Ecdysozoans

The _________are the simplest animals to have an excretory system. (Hint: This system consists of cilia beating within canals.)

A hemocoel or blood cavity is found in or associated with

Flatworms have a coelom that is only partially surrounded with mesoderm.

The only animals that lack tissues are

Which germ layer gives rise to the muscle layer of the uterus?

A sea urchin is a member of the phylum

_________are characterized by having a pseudocoelom.

Cephalopods are the only mollusks that have a closed circulatory system.

In the animal kingdom, cephalization is

All animal cells lack a _____.

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

All animals with tissues have

Flatworms that contain both male and female reproductive organs in the same individual are called_________ .

A hemocoel is part of an open circulatory system.

Explain why natural selection would have favored a closed circulatory system for cephalopods.

What distinguishes a free-living flatworm from other organisms?

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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