Question 1

The idiosyncratic hypothesis suggests that:

Accepted Answer

A)  Ecosystem function changes unpredictably as the number of species increases or decreases.
B)  Ecosystem function decreases as the number of species decreases.
C)  Ecosystem function changes in a predictable,but non-linear manner with a change in species number.
D)  Ecosystem function is independent of the number of species.
E)  Ecosystem function decreases as the number of species increases.F) A) and E)
G) B) and C)

Question 2

In the northeastern Pacific ocean,sea otters occur at a relatively low abundance.By preying upon sea urchins,sea otters maintain underwater kelp (large algae) "forests",which would otherwise be decimated by the herbivorous sea urchins.The kelp forests supply food for a wide variety of marine organisms,as well as providing refuge from predation and nursery habitat for juveniles.Based on this,what type of species best describes sea otters?

Accepted Answer

A)  indicator species.
B)  flagship species.
C)  keystone species.
D)  dominant species.
E)  umbrella species.F) A) and C)
G) A) and E)

Question 3

In a population of 2400 long horn sheep,400 males and 750 females breed each season.What percentage of the actual population is the effective population size?

Accepted Answer

A)  ~48%
B)  ~43%
C)  ~27%
D)  ~65%
E)  ~17%F) A) and E)
G) C) and D)

Question 4

The United States contains at least one biodiversity hot spot.

Accepted Answer

A) True 
 B)False

Question 5

The probable extinction of the ivory-billed woodpecker was mainly driven by

Accepted Answer

A)  direct exploitation.
B)  introduced species.
C)  habitat destruction.
D)  climate change.
E)  genetic drift.F) A) and B)
G) A) and C)

Exam 47: Biodiversity and Conservation Biology

The United States contains at least one biodiversity hot spot.

Correct Answer
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Correct Answer
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The probable extinction of the ivory-billed woodpecker was mainly driven by

Correct Answer
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In a population of 2400 long horn sheep,400 males and 750 females breed each season.What percentage of the actual population is the effective population size?

Correct Answer
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The idiosyncratic hypothesis suggests that:

Correct Answer
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Exam 47: Biodiversity and Conservation Biology

The United States contains at least one biodiversity hot spot.

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Correct AnswerverifiedShow Answer

The probable extinction of the ivory-billed woodpecker was mainly driven by

Correct AnswerverifiedShow Answer

In a population of 2400 long horn sheep,400 males and 750 females breed each season.What percentage of the actual population is the effective population size?

Correct AnswerverifiedShow Answer

The idiosyncratic hypothesis suggests that:

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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