Question 1

Species diversity in a community is an important factor in ecological resilience after a drought.

Accepted Answer

A) True 
 B)False  True

Question 2

Flagship species

Accepted Answer

A)  are especially interesting and attractive and are used by conservation organizations to motivate people. 
B)  is a term that refers to the largest species of a community. 
C)  are species whose presence is tied to specific environmental conditions. 
A)  are especially interesting and attractive and are used by conservation organizations to motivate people. 
B)  is a term that refers to the largest species of a community. 
C)  are species whose presence is tied to specific environmental conditions. A

Question 3

Ecological diversity is a measure of the number of

Accepted Answer

A)  Different kinds of organisms within a community or ecosystem 
B)  Different versions of the same gene in an ecological community 
C)  Sizes, colors, and shapes of organisms within an ecological community 
D)  Niches, trophic levels, and ecological processes of a biological community 
E)  Different species in an ecosystem 
A)  Different kinds of organisms within a community or ecosystem 
B)  Different versions of the same gene in an ecological community 
C)  Sizes, colors, and shapes of organisms within an ecological community 
D)  Niches, trophic levels, and ecological processes of a biological community 
E)  Different species in an ecosystem D

Question 4

Where will you find the greatest concentration of different species?

Accepted Answer

A)  the tropics 
B)  Siberia 
C)  Europe 
D)  the poles 
A)  the tropics 
B)  Siberia 
C)  Europe 
D)  the poles

Question 5

Invasive (exotic) species tend to __________ the balance of ecosystems and ______ biodiversity.

Accepted Answer

A)  Increase; decrease 
B)  Increase; enhance 
C)  Maintain; enhance 
D)  Upset; decrease 
E)  Upset; increase 
A)  Increase; decrease 
B)  Increase; enhance 
C)  Maintain; enhance 
D)  Upset; decrease 
E)  Upset; increase

Question 6

Soil formation and water purification are examples of _________ based on the biodiversity that benefit humans.

Accepted Answer

A)  Aesthetic benefits 
B)  Geological cycles 
C)  Availability of food 
D)  Health benefits 
E)  Ecological services 
A)  Aesthetic benefits 
B)  Geological cycles 
C)  Availability of food 
D)  Health benefits 
E)  Ecological services

Question 7

Because prairie dogs have a major effect on the ecological functioning of their habitat and the health of other members of their community, they are considered to be

Accepted Answer

A)  an indicator species. 
B)  an umbrella species. 
C)  a keystone species. 
D)  a flagship species. 
A)  an indicator species. 
B)  an umbrella species. 
C)  a keystone species. 
D)  a flagship species.

Question 8

The goal of the Endangered Species Act is to protect

Accepted Answer

A)  broad categories of ecosystems. 
B)  key species which are particularly important for normal ecosystem function. 
C)  all species, regardless of their direct usefulness to humans. 
D)  species providing commodities important to humans. 
A)  broad categories of ecosystems. 
B)  key species which are particularly important for normal ecosystem function. 
C)  all species, regardless of their direct usefulness to humans. 
D)  species providing commodities important to humans.

Question 9

Approximately how many species have been identified on Earth?

Accepted Answer

A)  About 500,000 
B)  A little less than 1 million 
C)  A little more than 1.7 million 
D)  A little more than 3 million 
E)  About 30 million 
A)  About 500,000 
B)  A little less than 1 million 
C)  A little more than 1.7 million 
D)  A little more than 3 million 
E)  About 30 million

Question 10

Which of the following would be a characteristic of an exotic plant species?

Accepted Answer

A)  Produces a few seeds after many years to reach maturity 
B)  Is a specialist, for example, has a low range of tolerance for soil acidity 
C)  Is an opportunist that is desired by humans for food or ornamental value 
D)  Has many predators and diseases 
E)  Is a secondary consumer (trophic levels) 
A)  Produces a few seeds after many years to reach maturity 
B)  Is a specialist, for example, has a low range of tolerance for soil acidity 
C)  Is an opportunist that is desired by humans for food or ornamental value 
D)  Has many predators and diseases 
E)  Is a secondary consumer (trophic levels)

Question 11

A species in imminent danger of extinction is classified by the U.S. Endangered Species Act as

Accepted Answer

A)  Vulnerable 
B)  Threatened 
C)  Valuable 
D)  Endangered 
E)  At risk 
A)  Vulnerable 
B)  Threatened 
C)  Valuable 
D)  Endangered 
E)  At risk

Question 12

Name at least three invasive species that live in your area. What are some of the problems they are causing? Is anything being done to control these species?

Accepted Answer

Will vary

Question 13

Ecological diversity

Accepted Answer

A)  refers to the richness and complexity of a biological community. 
B)  is more important to conservation than genetic diversity. 
C)  refers to the various types of ecosystems on earth. 
D)  refers to the different kinds of species present in an ecosystem. 
A)  refers to the richness and complexity of a biological community. 
B)  is more important to conservation than genetic diversity. 
C)  refers to the various types of ecosystems on earth. 
D)  refers to the different kinds of species present in an ecosystem.

Question 14

The objective of a species recovery plan is to

Accepted Answer

A)  Interbreed threatened species with common species 
B)  Increase an endangered species population until it is no longer endangered 
C)  Invest corporate capital in species maintenance 
D)  Study the species for a better understanding of its role in the biological community 
E)  Protect the species to aid other organisms and resources in the ecosystem 
A)  Interbreed threatened species with common species 
B)  Increase an endangered species population until it is no longer endangered 
C)  Invest corporate capital in species maintenance 
D)  Study the species for a better understanding of its role in the biological community 
E)  Protect the species to aid other organisms and resources in the ecosystem

Question 15

What do Eurasian milfoil, kudzu vine and the emerald ash borer have in common?

Accepted Answer

A)  They are all in danger of extinction in their native habitats 
B)  They offer exciting prospects as potential sources of new drugs 
C)  They are exotic species wreaking havoc in the ecosystems into which they have been introduced 
D)  They offer promise as agents of biological control for pest species 
A)  They are all in danger of extinction in their native habitats 
B)  They offer exciting prospects as potential sources of new drugs 
C)  They are exotic species wreaking havoc in the ecosystems into which they have been introduced 
D)  They offer promise as agents of biological control for pest species

Question 16

A species that is naturally rare or that has been depleted to dangerous levels is known, according to the Endangered Species Act, as a(n) ________ species.

Accepted Answer

A)  Endangered 
B)  Threatened 
C)  Unusual 
D)  Vulnerable 
E)  At risk 
A)  Endangered 
B)  Threatened 
C)  Unusual 
D)  Vulnerable 
E)  At risk

Question 17

Zoo animals in the U.S. today come mainly from the wild.

Accepted Answer

A) True 
 B)False

Question 18

The pharmaceutical industry has an interest in preventing species extinction because

Accepted Answer

A)  People are healthier in a healthy environment. 
B)  Undiscovered species may provide lucrative new drugs. 
C)  Most taxonomists are drug makers. 
D)  It wants to increase diversity in North America. 
E)  They see the benefits of eco-design. 
A)  People are healthier in a healthy environment. 
B)  Undiscovered species may provide lucrative new drugs. 
C)  Most taxonomists are drug makers. 
D)  It wants to increase diversity in North America. 
E)  They see the benefits of eco-design.

Question 19

Which of the following fish is safe and environmentally friendly to eat?

Accepted Answer

A)  Swordfish 
B)  Wild salmon 
C)  Albacore tuna 
D)  Yellowfin tuna 
E)  Haddock 
A)  Swordfish 
B)  Wild salmon 
C)  Albacore tuna 
D)  Yellowfin tuna 
E)  Haddock

Question 20

Most of the species that are yet undiscovered are probably

Accepted Answer

A)  Mammals and reptiles 
B)  Birds and fish 
C)  Vertebrates 
D)  Invertebrates 
E)  Multicellular plants 
A)  Mammals and reptiles 
B)  Birds and fish 
C)  Vertebrates 
D)  Invertebrates 
E)  Multicellular plants

Exam 11: Biodiversity: Preserving Species

Species diversity in a community is an important factor in ecological resilience after a drought.

Flagship species

Ecological diversity is a measure of the number of

Where will you find the greatest concentration of different species?

Invasive (exotic) species tend to __________ the balance of ecosystems and ______ biodiversity.

Soil formation and water purification are examples of _________ based on the biodiversity that benefit humans.

Because prairie dogs have a major effect on the ecological functioning of their habitat and the health of other members of their community, they are considered to be

The goal of the Endangered Species Act is to protect

Approximately how many species have been identified on Earth?

Which of the following would be a characteristic of an exotic plant species?

A species in imminent danger of extinction is classified by the U.S. Endangered Species Act as

Name at least three invasive species that live in your area. What are some of the problems they are causing? Is anything being done to control these species?

Ecological diversity

The objective of a species recovery plan is to

What do Eurasian milfoil, kudzu vine and the emerald ash borer have in common?

A species that is naturally rare or that has been depleted to dangerous levels is known, according to the Endangered Species Act, as a(n) ________ species.

Zoo animals in the U.S. today come mainly from the wild.

The pharmaceutical industry has an interest in preventing species extinction because

Which of the following fish is safe and environmentally friendly to eat?

Most of the species that are yet undiscovered are probably

Understanding Our Environment

Principles of Science and Systems

Matter, Energy, and Life

Evolution, Biological Communities, and Species Interactions

Biomes: Global Patterns of Life

Population Biology

Human Populations

Environmental Health and Toxicology

Food and Hunger

Farming: Conventional and Sustainable Practices

Biodiversity: Preserving Landscapes

Restoration Ecology

Geology and Earth Resources

Climate Change

Air Pollution

Water Use and Management

Water Pollution

Conventional Energy

Sustainable Energy

Solid, Toxic, and Hazardous Waste

Urbanization and Sustainable Cities

Ecological Economics

Environmental Policy, Law, and Planning

What Then Shall We Do

Filters

Invasive (exotic) species tend to ____ the balance of ecosystems and biodiversity.