Question 1

Species that are threatened by extinction in the near future are labeled _______ species.

Accepted Answer

The answer of Species that are threatened by extinction in...

Question 2

Which of the following factors are used to determine which areas to protect?

Accepted Answer

A)   Species richness
B)   Human impacts on the area
C)   The number of endemic species in an area
D)   Both a and b
E)   Both a and cF) C) and E)
G) A) and E)

Question 3

Which of the following statements about the tropical rainforest is true?

Accepted Answer

A)   It is Earth's most species-rich biome.
B)   Its area has been relatively constant during the last 50 years.
C)   It is being lost at a rate of about 2 percent of the remaining forest each year.
D)   Both a and b
E)   Both a and cF) A) and B)
G) A) and C)

Question 4

Why do conservation biologists believe that global warming may lead to extensive decimation of species?

Accepted Answer

A)   Because little change in plant community composition has occurred in the past, we cannot expect present communities to adapt to climate change.
B)   The magnitude of climate change will be much greater than past periods of climatic change.
C)   Many sedentary species may not be able to shift their ranges at the same pace as the northern movement of temperature zones.
D)   Both b and c
E)   All of the aboveF) C) and D)
G) A) and B)

Question 5

Restoration ecology is an important field because

Accepted Answer

A)   many areas have been highly degraded.
B)   many areas are vulnerable to global climate change.
C)   many species suffer from demographic stochasticity.
D)   many species are genetically impoverished.
E)   fire is a threat to many areas.F) A) and E)
G) B) and C) A

Question 6

Why are species with rapidly shrinking populations especially vulnerable to extinction?

Accepted Answer

A)   Reductions in population size can lead to genetic drift and loss of genetic variation.
B)   Populations reduced to a small size or confined to a small range can easily be eliminated by local disturbances.
C)   Species with specialized habitat or dietary requirements are less likely to become extinct than species with more generalized requirements.
D)   Both a and b
E)   All of the aboveF) A) and C)
G) All of the above

Question 7

What are wildlife corridors, and how have experiments demonstrated that they help species persist in patchy environments?

Accepted Answer

Habitat corridors are relatively thin st...

Question 8

Which of the following statements about forest fires is true?

Accepted Answer

A)   Some plant species require periodic fires to establish themselves.
B)   The current official policy of the U.S. Forest Service is to suppress all forest fires.
C)   Scars in the annual growth rings of trees are evidence of past forest fires.
D)   Both a and b
E)   Both a and cF) B) and D)
G) B) and C)

Question 9

Which of the following statements about conservation biology is true?

Accepted Answer

A)   In the past there was often tension between conservation biologists who believed in conserving natural resources for economic reasons and those who were interested in the intrinsic value of nature.
B)   Conservation biology is an applied science.
C)   Human interests have no place in conservation biology.
D)   Both a and b
E)   Both b and cF) C) and D)
G) B) and D)

Question 10

Which of the following statements about extinctions is true?

Accepted Answer

A)   The background extinction rate is that which occurs during a mass extinction.
B)   Extinctions are occurring now at rates comparable to those of the five mass extinctions.
C)   Most of the species that have ever existed are extinct.
D)   Both a and b
E)   Both b and cF) None of the above
G) A) and D)

Question 11

Which of the following is not currently a major cause of species extinctions?

Accepted Answer

A)   Habitat destruction
B)   Rising sea levels
C)   Overexploitation
D)   Introduction of exotic predators
E)   Introduction of exotic pathogensF) B) and E)
G) C) and D)

Question 12

People value biodiversity for all of the following reasons except

Accepted Answer

A)   food, fiber, and medicine.
B)   aesthetic pleasure from interacting with other organisms.
C)   opportunities to study and understand the world they live in.
D)   the acceptance that extinctions are part of a natural process.
E)   functioning of ecosystems and the benefits they provide.F) A) and B)
G) A) and C) D

Question 13

Which of the following statements about human predation is true?

Accepted Answer

A)   Although an important threat to species in the past, overexploitation no longer threatens any species.
B)   The Banggai cardinalfish has benefited from the pet trade.
C)   The hunting of tigers for the medicinal use of their body parts is a primary threat to their survival.
D)   Both a and b
E)   None of the aboveF) C) and E)
G) C) and D)

Question 14

Which of the following efforts to preserve biodiversity best exemplifies reconciliation ecology?

Accepted Answer

A)   A campaign to discourage pesticide use on lawns
B)   A project to convert ranch land into a natural prairie
C)   Designation of the habitat of an endangered species as a protected area
D)   Elimination of commercial trade in products derived from endangered and threatened species
E)   A captive breeding program to maintain an endangered speciesF) None of the above
G) A) and B)

Question 15

A ban on the trade of elephant ivory has been enacted by

Accepted Answer

A)   UNESCO.
B)   the USDA.
C)   CITES.
D)   NATO.
E)   the AFL-CIO.F) A) and B)
G) A) and E)

Question 16

A plant species is more likely to become invasive if it has

Accepted Answer

A)   a long generation time.
B)   a close relative in the region to which it is introduced.
C)   large seeds.
D)   a slow rate of growth.
E)   None of the aboveF) C) and D)
G) B) and E)

Question 17

The field of reconciliation ecology has developed because

Accepted Answer

A)   all other methods of preserving biodiversity have failed.
B)   protected areas should be able to maintain biodiversity.
C)   protected areas alone are insufficient to maintain biodiversity.
D)   scientists are unable to control diseases today.
E)   we are not reconciled with other species.F) A) and B)
G) B) and C) C

Question 18

When habitats are progressively destroyed by human activities, the remaining habitat patches become smaller and more isolated. In other words, the habitat becomes

Accepted Answer

A)   diverse.
B)   fragmented.
C)   bottle-necked.
D)   diversified.
E)   homogeneous.F) B) and E)
G) A) and E)

Question 19

The California condor

Accepted Answer

A)   is being introduced into regions that were not part of its historic geographical range as part of the effort to save the species.
B)   became endangered partly because of high mortality that resulted from its eating carcasses containing lead shot.
C)   has increased in numbers because of captive propagation, though released captive-bred condors have not yet bred in the wild.
D)   has been reintroduced to the wild over the objections of cattle ranchers, who believe correctly that condors kill livestock.
E)   All of the aboveF) B) and D)
G) B) and C)

Question 20

Which of the following statements about elephants is true?

Accepted Answer

A)   Poaching of elephants continues throughout the world.
B)   In some countries of southern Africa, elephants are so common that government officials need to kill many of them to control their numbers.
C)   The demand for ivory from elephants is particularly strong in Japan and China.
D)   All of the above
E)   None of the aboveF) A) and E)
G) C) and D)

Exam 59: Conservation Biology

Species that are threatened by extinction in the near future are labeled _______ species.

Correct AnswerverifiedShow Answer

Which of the following factors are used to determine which areas to protect?

Correct AnswerverifiedShow Answer

Which of the following statements about the tropical rainforest is true?

Correct AnswerverifiedShow Answer

Why do conservation biologists believe that global warming may lead to extensive decimation of species?

Correct AnswerverifiedShow Answer

Restoration ecology is an important field because

Correct AnswerverifiedA

Why are species with rapidly shrinking populations especially vulnerable to extinction?

Correct AnswerverifiedShow Answer

What are wildlife corridors, and how have experiments demonstrated that they help species persist in patchy environments?

Correct AnswerverifiedHabitat corridors are relatively thin st...View AnswerShow Answer

Which of the following statements about forest fires is true?

Correct AnswerverifiedShow Answer

Which of the following statements about conservation biology is true?

Correct AnswerverifiedShow Answer

Which of the following statements about extinctions is true?

Correct AnswerverifiedShow Answer

Which of the following is not currently a major cause of species extinctions?

Correct AnswerverifiedShow Answer

People value biodiversity for all of the following reasons except

Correct AnswerverifiedD

Which of the following statements about human predation is true?

Correct AnswerverifiedShow Answer

Which of the following efforts to preserve biodiversity best exemplifies reconciliation ecology?

Correct AnswerverifiedShow Answer

A ban on the trade of elephant ivory has been enacted by

Correct AnswerverifiedShow Answer

A plant species is more likely to become invasive if it has

Correct AnswerverifiedShow Answer

The field of reconciliation ecology has developed because

Correct AnswerverifiedC

When habitats are progressively destroyed by human activities, the remaining habitat patches become smaller and more isolated. In other words, the habitat becomes

Correct AnswerverifiedShow Answer

The California condor

Correct AnswerverifiedShow Answer

Which of the following statements about elephants is true?

Correct AnswerverifiedShow Answer

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Habitat corridors are relatively thin st...
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D

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C

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