Question 1

In aquatic environments, high levels of nutrients can act as pollutants. True or False?

Accepted Answer

A) True 
 B)False  True

Question 2

What is the difficulty with establishing small, isolated reserve areas for the preservation of threatened species?

Accepted Answer

The species may require large areas of continuous habitat and may be injured or killed trying to cross nonreserve areas.

Question 3

The minimum viable population is the:

Accepted Answer

A) number of organisms that can be spread over a fragmented habitat. 
B) smallest number of organisms capable of maintaining a population. 
C) smallest number of males needed to maintain a population. 
D) number of organisms produced by an inbred population. 
E) number of organisms that can reproduce in a population. 
A) number of organisms that can be spread over a fragmented habitat. 
B) smallest number of organisms capable of maintaining a population. 
C) smallest number of males needed to maintain a population. 
D) number of organisms produced by an inbred population. 
E) number of organisms that can reproduce in a population. B

Question 4

An introduced species is "invasive" if it:

Accepted Answer

A) is a threat to humans. 
B) cannot successfully maintain a population in the new habitat. 
C) survives in its new habitat and forms mutually beneficial relationships with native species. 
D) outcompetes native species in its new habitat. 
E) does not cause significant harm to native species. 
A) is a threat to humans. 
B) cannot successfully maintain a population in the new habitat. 
C) survives in its new habitat and forms mutually beneficial relationships with native species. 
D) outcompetes native species in its new habitat. 
E) does not cause significant harm to native species.

Question 5

In less-developed countries, many species are being harvested unsustainably because:

Accepted Answer

A) they are considered a danger to humans. 
B) the people must eat or sell the species' products to survive. 
C) they are hunted and killed because they carry human diseases. 
D) people thoughtlessly destroy what they do not need. 
E) pollution has reduced their population sizes dramatically. 
A) they are considered a danger to humans. 
B) the people must eat or sell the species' products to survive. 
C) they are hunted and killed because they carry human diseases. 
D) people thoughtlessly destroy what they do not need. 
E) pollution has reduced their population sizes dramatically.

Question 6

The most likely explanation for any mass extinction event is:

Accepted Answer

A) loss of genetic diversity due to inbreeding. 
B) a gradual increase in global temperature. 
C) coevolution of predator and prey species. 
D) rapid environmental change. 
E) human activity. 
A) loss of genetic diversity due to inbreeding. 
B) a gradual increase in global temperature. 
C) coevolution of predator and prey species. 
D) rapid environmental change. 
E) human activity.

Question 7

Removal of a keystone species from an ecosystem has minimal effect because other species compensate and take over its role. True or False?

Accepted Answer

A) True 
 B)False

Question 8

Much of the tropical rain-forest land that has been lost has been used for:

Accepted Answer

A) pastures for grazing domestic animals. 
B) wildlife preserves. 
C) human dwellings. 
D) recreational areas. 
E) farmland. 
A) pastures for grazing domestic animals. 
B) wildlife preserves. 
C) human dwellings. 
D) recreational areas. 
E) farmland.

Question 9

The goals of conservation biologists include all of the following EXCEPT:

Accepted Answer

A) cataloguing the number of species. 
B) studying the natural impacts of human activities. 
C) working toward resource sustainability. 
D) reversing the loss of biodiversity. 
E) maintaining and restoring natural ecosystems. 
A) cataloguing the number of species. 
B) studying the natural impacts of human activities. 
C) working toward resource sustainability. 
D) reversing the loss of biodiversity. 
E) maintaining and restoring natural ecosystems.

Question 10

Core reserves are areas where:

Accepted Answer

A) humans are forbidden from entering. 
B) wildlife species benefit from extensive conservation programs, including nurseries and clinics. 
C) only human activities that have low impact on the native wildlife are allowed. 
D) humans have irrevocably destroyed the local ecosystem. 
E) humans are allowed to use and develop as they see fit. 
A) humans are forbidden from entering. 
B) wildlife species benefit from extensive conservation programs, including nurseries and clinics. 
C) only human activities that have low impact on the native wildlife are allowed. 
D) humans have irrevocably destroyed the local ecosystem. 
E) humans are allowed to use and develop as they see fit.

Question 11

-According to the graph, the human population's biological footprint in 1965 was estimated at:

Accepted Answer

A) 0)5 Earth. 
B) 0)6 Earth. 
C) 0)8 Earth. 
D) 1 Earth. 
E) 1)2 Earths. 
A) 0)5 Earth. 
B) 0)6 Earth. 
C) 0)8 Earth. 
D) 1 Earth. 
E) 1)2 Earths.

Question 12

Sustainable agriculture depends on planting large tracts of high-profit crops. True or False?

Accepted Answer

A) True 
 B)False

Question 13

About ________% of the carbon dioxide produced by human activity is a result of deforestation.

Accepted Answer

A) 10 
B) 25 
C) 40 
D) 50 
E) 75 
A) 10 
B) 25 
C) 40 
D) 50 
E) 75

Question 14

Plants help reduce flooding by:

Accepted Answer

A) removing soil. 
B) increasing the soil's ability to hold water. 
C) increasing CO2 levels. 
D) breaking down the soil. 
E) decreasing the amount of water returned to the air. 
A) removing soil. 
B) increasing the soil's ability to hold water. 
C) increasing CO2 levels. 
D) breaking down the soil. 
E) decreasing the amount of water returned to the air.

Question 15

In Yellowstone National Park, moose are the keystone species. True or False?

Accepted Answer

A) True 
 B)False

Question 16

The ecological footprint of the human species is about:

Accepted Answer

A) 30% of Earth's biocapacity. 
B) 80% of Earth's biocapacity. 
C) equal to Earth's biocapacity. 
D) 30% greater than Earth's biocapacity. 
E) 80% greater than Earth's biocapacity. 
A) 30% of Earth's biocapacity. 
B) 80% of Earth's biocapacity. 
C) equal to Earth's biocapacity. 
D) 30% greater than Earth's biocapacity. 
E) 80% greater than Earth's biocapacity.

Question 17

Straightening rivers improves water quality, expands breeding areas for birds and fish, and reduces the number of invasive species. True or False?

Accepted Answer

A) True 
 B)False

Question 18

-According to the graph, the human population's biological footprint in 2000 was estimated at:

Accepted Answer

A) 0)5 Earth. 
B) 0)6 Earth. 
C) 0)8 Earth. 
D) 1 Earth. 
E) 1)2 Earths. 
A) 0)5 Earth. 
B) 0)6 Earth. 
C) 0)8 Earth. 
D) 1 Earth. 
E) 1)2 Earths.

Question 19

In 2005, the authors of the Millennium Ecosystem Assessment concluded that ________% of Earth's ecosystem services are being degraded.

Accepted Answer

A) 5 
B) 20 
C) 40 
D) 60 
E) 80 
A) 5 
B) 20 
C) 40 
D) 60 
E) 80

Question 20

A(n)________ is an animal whose predation on other species has major effects on the structure of the biological community.

Accepted Answer

The answer of A(n)________ is an animal whose predation on...

Exam 30: Conserving Earths Biodiversity

In aquatic environments, high levels of nutrients can act as pollutants. True or False?

What is the difficulty with establishing small, isolated reserve areas for the preservation of threatened species?

The minimum viable population is the:

An introduced species is "invasive" if it:

In less-developed countries, many species are being harvested unsustainably because:

The most likely explanation for any mass extinction event is:

Removal of a keystone species from an ecosystem has minimal effect because other species compensate and take over its role. True or False?

Much of the tropical rain-forest land that has been lost has been used for:

The goals of conservation biologists include all of the following EXCEPT:

Core reserves are areas where:

-According to the graph, the human population's biological footprint in 1965 was estimated at:

Sustainable agriculture depends on planting large tracts of high-profit crops. True or False?

About ________% of the carbon dioxide produced by human activity is a result of deforestation.

Plants help reduce flooding by:

In Yellowstone National Park, moose are the keystone species. True or False?

The ecological footprint of the human species is about:

Straightening rivers improves water quality, expands breeding areas for birds and fish, and reduces the number of invasive species. True or False?

-According to the graph, the human population's biological footprint in 2000 was estimated at:

In 2005, the authors of the Millennium Ecosystem Assessment concluded that ________% of Earth's ecosystem services are being degraded.

A(n)________ is an animal whose predation on other species has major effects on the structure of the biological community.

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 I: Invertebrates

Animal Diversity Ii: Vertebrates

Animal Behavior

Population Growth and Regulation

Community Interactions

How Do Ecosystems Work

Earths Diverse Ecosystems

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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