Question 1

Which of these definitions of species best matches the biological species concept?

Accepted Answer

A)  Members of the same species are all genetically identical. 
B)  Members of the same species are whatever an expert says they are. 
C)  Members of the same species can mate and produce fertile offspring. 
D)  Members of the same species are all morphologically similar. 
E)  Members of the same species look almost exactly alike. 
A)  Members of the same species are all genetically identical. 
B)  Members of the same species are whatever an expert says they are. 
C)  Members of the same species can mate and produce fertile offspring. 
D)  Members of the same species are all morphologically similar. 
E)  Members of the same species look almost exactly alike.

Question 2

Mechanisms that prevent mating between species are called isolating mechanisms.

Accepted Answer

The answer of Mechanisms that prevent mating between species are...

Question 3

When hybrid offspring are created between species but are unable to breed successfully, it is referred to as
.

Accepted Answer

The answer of When hybrid offspring are created between species...

Question 4

Which of the following is the most prevalent immediate cause of extinction?

Accepted Answer

A)  Environmental change 
B)  Disease 
C)  Specialization 
D)  Competition 
E)  Predation 
A)  Environmental change 
B)  Disease 
C)  Specialization 
D)  Competition 
E)  Predation

Question 5

A plant breeder can use plum pollen to hand- fertilize an apricot flower. The fruit contains fertile seed that grows into a hybrid called a plucot. However, in the natural environment, plums and apricots bloom several weeks apart. Why are plums and apricots considered separate species?

Accepted Answer

Because the flowering occurs at two diff

Question 6

The most common cause of extinction is

Accepted Answer

A)  habitat change. 
B)  asteroid impacts. 
C)  interactions with other species. 
D)  overspecialization. 
E)  limited species range. 
A)  habitat change. 
B)  asteroid impacts. 
C)  interactions with other species. 
D)  overspecialization. 
E)  limited species range.

Question 7

Which species is most likely to become extinct?

Accepted Answer

A)  Carp, found throughout Europe, the United States, and Canada 
B)  The jack- in- the- pulpit, found throughout the eastern United States and Canada 
C)  The white tiger beetle, found throughout several mid- Atlantic U.S. states 
D)  The northeastern pygmy shrew, found throughout New Jersey and Pennsylvania 
E)  Kirtland's warbler, which breeds in only a small area of Michigan 
A)  Carp, found throughout Europe, the United States, and Canada 
B)  The jack- in- the- pulpit, found throughout the eastern United States and Canada 
C)  The white tiger beetle, found throughout several mid- Atlantic U.S. states 
D)  The northeastern pygmy shrew, found throughout New Jersey and Pennsylvania 
E)  Kirtland's warbler, which breeds in only a small area of Michigan

Question 8

The parasitic Rhagoletis flies show such a preference for either hawthorn or apple trees that they are no longer interbreeding populations. What type of speciation does this scenario illustrate?

Accepted Answer

A)  Allopatric 
B)  Sympatric 
C)  Specialization 
D)  The founder effect 
E)  Polyploidy 
A)  Allopatric 
B)  Sympatric 
C)  Specialization 
D)  The founder effect 
E)  Polyploidy

Question 9

The biological concept of species requires that

Accepted Answer

A)  organisms reproduce sexually. 
B)  individuals are able to reproduce outside the group. 
C)  organisms are morphologically similar. 
D)  geographic isolation occurs. 
E)  only asexual reproduction occurs. 
A)  organisms reproduce sexually. 
B)  individuals are able to reproduce outside the group. 
C)  organisms are morphologically similar. 
D)  geographic isolation occurs. 
E)  only asexual reproduction occurs.

Exam 17: The Origin of Species

Which of these definitions of species best matches the biological species concept?

Mechanisms that prevent mating between species are called isolating mechanisms.

When hybrid offspring are created between species but are unable to breed successfully, it is referred to as .

Which of the following is the most prevalent immediate cause of extinction?

A plant breeder can use plum pollen to hand- fertilize an apricot flower. The fruit contains fertile seed that grows into a hybrid called a plucot. However, in the natural environment, plums and apricots bloom several weeks apart. Why are plums and apricots considered separate species?

The most common cause of extinction is

Which species is most likely to become extinct?

The parasitic Rhagoletis flies show such a preference for either hawthorn or apple trees that they are no longer interbreeding populations. What type of speciation does this scenario illustrate?

The biological concept of species requires that

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 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 I: Invertebrates

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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