Question 1

_______________ species are those that normally live and thrive in a particular community.

Accepted Answer

The answer of _______________ species are those that normally live...

Question 2

What is found in a mature ecosystem?

Accepted Answer

A)  low efficiency of nutrient recycling 
B)  high efficiency of energy use 
C)  mainly annual plants 
D)  low species diversity 
A)  low efficiency of nutrient recycling 
B)  high efficiency of energy use 
C)  mainly annual plants 
D)  low species diversity

Question 3

Which of the following is a characteristic of a forest maintained by intermittent fire?

Accepted Answer

A)  It takes up to a decade for new vegetation to grow. 
B)  Some species release seeds only after exposure to intense heat. 
C)  Fire burns the tree crowns but not the low vegetation. 
D)  Large and small trees of this forest tend to have fire-proof bark. 
A)  It takes up to a decade for new vegetation to grow. 
B)  Some species release seeds only after exposure to intense heat. 
C)  Fire burns the tree crowns but not the low vegetation. 
D)  Large and small trees of this forest tend to have fire-proof bark.

Question 4

___________________________________ is competition between two members of the same species.

Accepted Answer

Intraspeci

Question 5

Populations of a number of commercially valuable shark species have decreased by 90% since 1992.

Accepted Answer

A) True 
 B)False

Question 6

Which term refers to the ability of a population to maintain a certain population size?

Accepted Answer

A)  constancy 
B)  inertia 
C)  resilience 
D)  stability 
A)  constancy 
B)  inertia 
C)  resilience 
D)  stability

Question 7

What is a basis for classifying an organism as an indicator?

Accepted Answer

A)  its range of tolerance 
B)  its niche 
C)  its range of tolerance and its niche 
D)  its size 
A)  its range of tolerance 
B)  its niche 
C)  its range of tolerance and its niche 
D)  its size

Question 8

One precautionary principle for environmental protection is: prevent harm once a cause-and-effect relationship has been established.

Accepted Answer

A) True 
 B)False

Question 9

Which term is defined by a relationship in which a member of one species obtains its nourishment by living on,in,or near a member of another species over an extended time?

Accepted Answer

A)  parasitism 
B)  predation 
C)  competition 
D)  mutualism 
A)  parasitism 
B)  predation 
C)  competition 
D)  mutualism

Question 10

Why have amphibian populations declined?

Accepted Answer

A)  habitat loss 
B)  pollution 
C)  habitat loss and pollution 
D)  decreased UV radiation 
A)  habitat loss 
B)  pollution 
C)  habitat loss and pollution 
D)  decreased UV radiation

Question 11

A forester observes a maple seedling grow successfully in a birch stand.Both species thrive.Which is the accepted term for what the forester observed?

Accepted Answer

A)  tolerance 
B)  inhibition 
C)  primary succession 
D)  tertiary succession 
A)  tolerance 
B)  inhibition 
C)  primary succession 
D)  tertiary succession

Question 12

Which of the following would undergo secondary succession?

Accepted Answer

A)  cooled volcanic lava 
B)  a heavily polluted stream that has been cleaned up 
C)  an abandoned parking lot 
D)  a bare rock outcrop 
A)  cooled volcanic lava 
B)  a heavily polluted stream that has been cleaned up 
C)  an abandoned parking lot 
D)  a bare rock outcrop

Question 13

What is one characteristic of amphibians?

Accepted Answer

A)  Amphibians eat more insects than birds do. 
B)  Amphibians are often considered keystone species. 
C)  Amphibians are experiencing sharp population increases in a variety of habitats. 
D)  Amphibians are not an important indicator species. 
A)  Amphibians eat more insects than birds do. 
B)  Amphibians are often considered keystone species. 
C)  Amphibians are experiencing sharp population increases in a variety of habitats. 
D)  Amphibians are not an important indicator species.

Question 14

Invasive species tend to be generalists in nature.

Accepted Answer

A) True 
 B)False

Question 15

Which term refers to a species that lives and thrives in a particular ecosystem?

Accepted Answer

A)  specialist species 
B)  non-native species 
C)  keystone species 
D)  native species 
A)  specialist species 
B)  non-native species 
C)  keystone species 
D)  native species

Question 16

Compared to forests,which set of characteristics do grasslands have?

Accepted Answer

A)  more diversity and more resilience 
B)  more diversity and more inertia 
C)  less diversity and more inertia 
D)  less diversity and more resilience 
A)  more diversity and more resilience 
B)  more diversity and more inertia 
C)  less diversity and more inertia 
D)  less diversity and more resilience

Question 17

Which organism is referred to as an endoparasite?

Accepted Answer

A)  a mosquito 
B)  a flea 
C)  mistletoe 
D)  a tapeworm 
A)  a mosquito 
B)  a flea 
C)  mistletoe 
D)  a tapeworm

Question 18

What characterizes a tropical rain forest?

Accepted Answer

A)  low constancy 
B)  high resilience 
C)  low diversity 
D)  low inertia 
A)  low constancy 
B)  high resilience 
C)  low diversity 
D)  low inertia

Question 19

Which term refers to a relationship in which both species benefit?

Accepted Answer

A)  benefitism 
B)  commensalism 
C)  mutualism 
D)  co-operation 
A)  benefitism 
B)  commensalism 
C)  mutualism 
D)  co-operation

Question 20

Which term refers to a species that serves as an early warning of environmental damage?

Accepted Answer

A)  non-native species 
B)  specialist species 
C)  native species 
D)  indicator species 
A)  non-native species 
B)  specialist species 
C)  native species 
D)  indicator species

Exam 8: Community Ecology

_______________ species are those that normally live and thrive in a particular community.

What is found in a mature ecosystem?

Which of the following is a characteristic of a forest maintained by intermittent fire?

___________________________________ is competition between two members of the same species.

Populations of a number of commercially valuable shark species have decreased by 90% since 1992.

Which term refers to the ability of a population to maintain a certain population size?

What is a basis for classifying an organism as an indicator?

One precautionary principle for environmental protection is: prevent harm once a cause-and-effect relationship has been established.

Which term is defined by a relationship in which a member of one species obtains its nourishment by living on,in,or near a member of another species over an extended time?

Why have amphibian populations declined?

A forester observes a maple seedling grow successfully in a birch stand.Both species thrive.Which is the accepted term for what the forester observed?

Which of the following would undergo secondary succession?

What is one characteristic of amphibians?

Invasive species tend to be generalists in nature.

Which term refers to a species that lives and thrives in a particular ecosystem?

Compared to forests,which set of characteristics do grasslands have?

Which organism is referred to as an endoparasite?

What characterizes a tropical rain forest?

Which term refers to a relationship in which both species benefit?

Which term refers to a species that serves as an early warning of environmental damage?

Environmental Problems: an Introduction and Overview

Environmental History: Learning From the Past

Science, systems, matter, and Energy

Ecosystems: What Are They, and How Do They Work

Evolution and Biodiversity

Climate and Terrestrial Biodiversity

Aquatic Biodiversity

Population Ecology

Applying Population Ecology: the Human Population

Sustaining Terrestrial Biodiversity: Managing and Protecting Ecosystems

Sustaining Biodiversity: the Species Approach

Sustaining Aquatic Biodiversity

Food and Soil Resources

Water Resources

Geology and Nonrenewable Mineral Resources

Nonrenewable Energy Resources

Energy Efficiency and Renewable Energy

Risk,toxicology,and Human Health

Air Pollution

Climate Change and Ozone Loss

Water Pollution

Pest Management

Solid and Hazardous Waste

Sustainable Cities

Economics, environment, and Sustainability

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Environmental World-views, ethics, and Sustainability

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