Question 1

A species in an ecosystem that plays a central role in the health of that ecosystem, and whose removal may cause the collapse of the ecosystem, is called a(n)

Accepted Answer

A) foundation species 
B) indicator species 
C) native species 
D) keystone species 
E) specialist species 
A) foundation species 
B) indicator species 
C) native species 
D) keystone species 
E) specialist species

Question 2

A change in the genetic characteristics of a population from one generation to another is called

Accepted Answer

A) emigration 
B) mutation 
C) natural selection 
D) evolution 
E) genetic drift 
A) emigration 
B) mutation 
C) natural selection 
D) evolution 
E) genetic drift

Question 3

The role a species plays in its ecosystem is the

Accepted Answer

A) function 
B) habitat 
C) ecological niche 
D) geographical location 
E) ecological job 
A) function 
B) habitat 
C) ecological niche 
D) geographical location 
E) ecological job

Question 4

In geologic history mass extinctions have been followed by an increase in species diversity.

Accepted Answer

A) True 
 B)False

Question 5

All nonnative species are villains.

Accepted Answer

A) True 
 B)False

Question 6

Genetic engineering allows scientists to transfer genes between different species that would not interbreed in nature.

Accepted Answer

A) True 
 B)False

Question 7

The earth's spinning on its axis prevents one side from being too hot and the other side too cold for water-based life to exist.

Accepted Answer

A) True 
 B)False

Question 8

Genetic variation in a population is the result of ____________________.

Accepted Answer

The answer of Genetic variation in a population is the...

Question 9

The movement of the continents influences evolution in which of the following ways?

Accepted Answer

A) increases the level of carbon dioxide 
B) changes the earth's climate 
C) changes the spin of the earth 
D) decreases soil nutrient richness 
E) changes magnetic fields and disrupts migration patterns 
A) increases the level of carbon dioxide 
B) changes the earth's climate 
C) changes the spin of the earth 
D) decreases soil nutrient richness 
E) changes magnetic fields and disrupts migration patterns

Question 10

The diversity that enables life on earth to adapt and survive environmental changes is called

Accepted Answer

A) functional diversity 
B) genetic diversity 
C) intellectual diversity 
D) ecosystem diversity 
E) species diversity 
A) functional diversity 
B) genetic diversity 
C) intellectual diversity 
D) ecosystem diversity 
E) species diversity

Question 11

Which of the following is another name for a nonnative species?

Accepted Answer

A) native 
B) invasive 
C) keystone 
D) indicator 
E) foundation 
A) native 
B) invasive 
C) keystone 
D) indicator 
E) foundation

Question 12

For natural selection to occur, an adaptive trait

Accepted Answer

A) must be to a physical trait 
B) must be to a physiological trait 
C) must be to a psychological trait 
D) must be to a heritable trait 
E) must not be to a heritable trait 
A) must be to a physical trait 
B) must be to a physiological trait 
C) must be to a psychological trait 
D) must be to a heritable trait 
E) must not be to a heritable trait

Question 13

Which of the following is not an example of a cause for the decline of amphibians?

Accepted Answer

A) habitat loss 
B) prolonged rainy periods 
C) pollution 
D) increases in UV radiation 
E) parasites 
A) habitat loss 
B) prolonged rainy periods 
C) pollution 
D) increases in UV radiation 
E) parasites

Question 14

The best guess of the total number of species on earth is between __________ and __________.

Accepted Answer

8 million;

Question 15

Shark species have been around for more than 400 million years.

Accepted Answer

A) True 
 B)False

Question 16

Sharks are an important part of biodiversity for all of the following reasons, except

Accepted Answer

A) they remove dead and dying fish 
B) they could teach us how to not get cancer 
C) they are an important food source for whales 
D) they remove dead and dying aquatic mammals 
E) their immune systems could teach us how to heal without becoming infected 
A) they remove dead and dying fish 
B) they could teach us how to not get cancer 
C) they are an important food source for whales 
D) they remove dead and dying aquatic mammals 
E) their immune systems could teach us how to heal without becoming infected

Question 17

More plant species have been identified than any other group of organisms.

Accepted Answer

A) True 
 B)False

Question 18

Estimates indicate the average annual background extinction rate is one to five species for each million species on earth.

Accepted Answer

A) True 
 B)False

Question 19

The loss of a(n) ____________________ species can lead to population crashes and extinctions of other species in a community that depend on it.

Accepted Answer

The answer of The loss of a(n) ____________________ species can...

Question 20

The variety of processes, including matter cycling and energy flow within ecosystems, which result from species interacting with one another in food webs is called

Accepted Answer

A) functional diversity 
B) genetic diversity 
C) intellectual diversity 
D) ecosystem diversity 
E) species diversity 
A) functional diversity 
B) genetic diversity 
C) intellectual diversity 
D) ecosystem diversity 
E) species diversity

Exam 4: Biodiversity and Evolution

A species in an ecosystem that plays a central role in the health of that ecosystem, and whose removal may cause the collapse of the ecosystem, is called a(n)

A change in the genetic characteristics of a population from one generation to another is called

The role a species plays in its ecosystem is the

In geologic history mass extinctions have been followed by an increase in species diversity.

All nonnative species are villains.

Genetic engineering allows scientists to transfer genes between different species that would not interbreed in nature.

The earth's spinning on its axis prevents one side from being too hot and the other side too cold for water-based life to exist.

Genetic variation in a population is the result of ____________________.

The movement of the continents influences evolution in which of the following ways?

The diversity that enables life on earth to adapt and survive environmental changes is called

Which of the following is another name for a nonnative species?

For natural selection to occur, an adaptive trait

Which of the following is not an example of a cause for the decline of amphibians?

The best guess of the total number of species on earth is between __________ and __________.

Shark species have been around for more than 400 million years.

Sharks are an important part of biodiversity for all of the following reasons, except

More plant species have been identified than any other group of organisms.

Estimates indicate the average annual background extinction rate is one to five species for each million species on earth.

The loss of a(n) ____________________ species can lead to population crashes and extinctions of other species in a community that depend on it.

The variety of processes, including matter cycling and energy flow within ecosystems, which result from species interacting with one another in food webs is called

Environmental Problems, Their Causes, and Sustainability

Science, Matter, Energy, and Systems

Ecosystems: What Are They and How Do They Work

Biodiversity, Species Interactions, and Population Control

The Human Population and Its Impact

Climate and Biodiversity

Aquatic Biodiversity

Sustaining Biodiversity: the Species Approach

Sustaining Terrestrial Biodiversity: the Ecosystem Approach

Sustaining Aquatic Biodiversity

Food, Soil, and Pest Management

Water Resources

Geology and Nonrenewable Mineral Resources

Nonrenewable Energy

Energy Efficiency and Renewable Energy

Environmental Hazards and Human Health

Air Pollution

Climate Disruption and Ozone Depletion

Water Pollution

Solid and Hazardous Waste

Cities and Sustainability

Economics, Environment, and Sustainability

Politics, Environment, and Sustainability

Environmental Worldviews, Ethics, and Sustainability

Filters

The best guess of the total number of species on earth is between and .