Question 1

A population of salamanders consisting of 2150 individuals will lose genetic diversity due to genetic drift at _______ the rate of a population consisting of 250 individuals.

Accepted Answer

A)  five times
B)  ten times
C)  one tenth
D)  twice
E)  one hundredth

Question 2

The propagation of animals and plants outside their natural habitat is called

Accepted Answer

A)  captive breeding.
B)  reintroduction.
C)  cloning.
D)  rehabilitation.
E)  replacement.

Question 3

What statement is most in accordance with the keystone hypothesis?

Accepted Answer

A)  Each species plays a small,but important role in the health of an ecosystem.
B)  The fewer species present in an ecosystem,the more stable the community.
C)  Only a few species contribute to the functioning of a particular ecosystem.
D)  The role of each species within an ecosystem is highly unpredictable.

Question 4

The biodiversity crisis refers to

Accepted Answer

A)  an area in the tropics where extinction rates are high.
B)  the global elevated loss of species over the last several hundred years.
C)  recent extinctions due to human-induced climate change.
D)  the difficulty in restoring disturbed habitats.

Question 5

The extinction rate of mammal species has gone up as human populations have increased,while the extinction rate of birds has declined.

Accepted Answer

A) True 
 B)False

Question 6

Grizzly bears have large geographic ranges that consist of mosaics of forests and grasslands at varying altitudes.Grizzlies also require relatively pristine water sources in their range.Based on this,what species type best describes grizzly bears?

Accepted Answer

A)  indicator species.
B)  keystone species.
C)  endemic species.
D)  flagship species.
E)  umbrella species.

Question 7

Ecosystem diversity

Accepted Answer

A)  is the diversity of animal species within a defined geographical areA.
B)  is primarily associated with aquatic habitats.
C)  refers to the structure and function within an ecosystem.
D)  includes only species-rich ecosystems. C

Question 8

According to the redundancy hypothesis,species are redundant if

Accepted Answer

A)  they could be eliminated or replaced by others with no loss of ecosystem function.
B)  they have grown beyond their carrying capacity for a particular ecosystem.
C)  their ecological niche overlaps somewhat with another species.
D)  they have an effect on the ecosystem that is disproportionate with their abundance.

Question 9

Threatened species

Accepted Answer

A)  are rare species that are exploited by humans.
B)  are species likely to become endangered in the future.
C)  are currently in danger of extinction throughout all or most of their range.
D)  will be extinct within 100 years.
E)  are found only in captivity.

Question 10

In the context of biodiversity,genetic diversity consists of

Accepted Answer

A)  all the alleles and transcription factors within a species
B)  the amount of genetic variation that occurs within and between populations
C)  the amount of genetic variation that occurs in an individual
D)  the amount of genetic variation that occurs between species
E)  the amount of genetic variation that occurs within and between species

Question 11

What strategies employed in habitat conservation? Select all that apply.

Accepted Answer

A)   identifying representative habitats
B)    ecosystem replacement
C)   rehabilitation of previously damaged areas
D)   identifying areas rich in endemic species
E)   establishing a captive breeding programReview section 47.4 and distinguish between conservation and restoration of habitats. A,D

Question 12

The passenger pigeon went extinct due to an introduced parasite.

Accepted Answer

A) True 
 B)False

Question 13

SLOSS stands for single long or several short.

Accepted Answer

A) True 
 B)False

Question 14

In a series of field experiments,David Tilman and colleagues investigated biodiversity and ecosystem function.They found a relationship between

Accepted Answer

A)  ecosystem diversity and species richness.
B)  ecosystem diversity and genetic diversity.
C)  species diversity and genetic diversity.
D)  species diversity and ecosystem function.

Question 15

A nonprofit conservation organization receives a sizeable donation and decides to purchase several thousand acres of 'high desert' in southern California.This particular type of desert has an intermediate level of species diversity and relatively few unique species.However,much of the original areas of high desert have been converted to suburban housing and shopping.The decision by the nonprofit to preserve this area was most likely based upon what conservation strategy?

Accepted Answer

A)  Conservation of areas rich in endemic species
B)  Conservation of representative habitats
C)  Conservation of megadiverse areas
D)  Conservation of single species

Question 16

Captive breeding could potentially save all rare species.

Accepted Answer

A) True 
 B)False

Question 17

Which of these is the best example of an umbrella species?

Accepted Answer

A)  northern spotted owl.
B)  Burmese python
C)  American beaver.
D)  giant panda.
E)  cogongrass.

Question 18

A large effective population size is important so that a species

Accepted Answer

A)  can maintain an adequate geographical range.
B)  does not change its trophic relationships.
C)  will not lose large amounts of genetic diversity.
D)  can minimize edge effects.
E)  can remain endemic to a small area. C

Question 19

An endemic species is one that

Accepted Answer

A)  has been cultivated by humans.
B)  requires a very large territory.
C)  is found in only one particular place or region.
D)  can be used as an indicator species.
E)  has a disproportionate effect on its ecosystem.

Question 20

According to the IUCN's data,a smaller percentage of bird than coral reef-dwelling fish species are endangered.

Accepted Answer

A) True 
 B)False

Exam 47: Biodiversity and Conservation Biology

A population of salamanders consisting of 2150 individuals will lose genetic diversity due to genetic drift at _______ the rate of a population consisting of 250 individuals.

Correct Answer
verified

The propagation of animals and plants outside their natural habitat is called

Correct Answer
verified

What statement is most in accordance with the keystone hypothesis?

Correct Answer
verified

The biodiversity crisis refers to

Correct Answer
verified

The extinction rate of mammal species has gone up as human populations have increased,while the extinction rate of birds has declined.

Correct Answer
verified

Grizzly bears have large geographic ranges that consist of mosaics of forests and grasslands at varying altitudes.Grizzlies also require relatively pristine water sources in their range.Based on this,what species type best describes grizzly bears?

Correct Answer
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Ecosystem diversity

Correct Answer
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C

According to the redundancy hypothesis,species are redundant if

Correct Answer
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Threatened species

Correct Answer
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In the context of biodiversity,genetic diversity consists of

Correct Answer
verified

What strategies employed in habitat conservation? Select all that apply.

Correct Answer
verified
A,D

The passenger pigeon went extinct due to an introduced parasite.

Correct Answer
verified

SLOSS stands for single long or several short.

Correct Answer
verified

In a series of field experiments,David Tilman and colleagues investigated biodiversity and ecosystem function.They found a relationship between

Correct Answer
verified

Correct Answer
verified

Captive breeding could potentially save all rare species.

Correct Answer
verified

Which of these is the best example of an umbrella species?

Correct Answer
verified

A large effective population size is important so that a species

Correct Answer
verified
C

An endemic species is one that

Correct Answer
verified

According to the IUCN's data,a smaller percentage of bird than coral reef-dwelling fish species are endangered.

Correct Answer
verified

Exam 47: Biodiversity and Conservation Biology

A population of salamanders consisting of 2150 individuals will lose genetic diversity due to genetic drift at _______ the rate of a population consisting of 250 individuals.

Correct AnswerverifiedShow Answer

The propagation of animals and plants outside their natural habitat is called

Correct AnswerverifiedShow Answer

What statement is most in accordance with the keystone hypothesis?

Correct AnswerverifiedShow Answer

The biodiversity crisis refers to

Correct AnswerverifiedShow Answer

The extinction rate of mammal species has gone up as human populations have increased,while the extinction rate of birds has declined.

Correct AnswerverifiedShow Answer

Grizzly bears have large geographic ranges that consist of mosaics of forests and grasslands at varying altitudes.Grizzlies also require relatively pristine water sources in their range.Based on this,what species type best describes grizzly bears?

Correct AnswerverifiedShow Answer

Ecosystem diversity

Correct AnswerverifiedC

According to the redundancy hypothesis,species are redundant if

Correct AnswerverifiedShow Answer

Threatened species

Correct AnswerverifiedShow Answer

In the context of biodiversity,genetic diversity consists of

Correct AnswerverifiedShow Answer

What strategies employed in habitat conservation? Select all that apply.

Correct AnswerverifiedA,D

The passenger pigeon went extinct due to an introduced parasite.

Correct AnswerverifiedShow Answer

SLOSS stands for single long or several short.

Correct AnswerverifiedShow Answer

In a series of field experiments,David Tilman and colleagues investigated biodiversity and ecosystem function.They found a relationship between

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Captive breeding could potentially save all rare species.

Correct AnswerverifiedShow Answer

Which of these is the best example of an umbrella species?

Correct AnswerverifiedShow Answer

A large effective population size is important so that a species

Correct AnswerverifiedC

An endemic species is one that

Correct AnswerverifiedShow Answer

According to the IUCN's data,a smaller percentage of bird than coral reef-dwelling fish species are endangered.

Correct AnswerverifiedShow Answer

Correct Answer
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C

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A,D

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C

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