Question 1

Deformities in amphibians include all of the following except:

Accepted Answer

A)   extra legs
B)   missing legs
C)   eyes located on the shoulder or back
D)   deformed jaws
E)   none, all are deformities

Question 2

All of the following are ecological benefits of habitat corridors EXCEPT:

Accepted Answer

A)   facilitating exchange of genetic material among populations
B)   increasing the probability that suitable habitat will be recolonized after a local population goes extinct
C)   preventing the spread of disease among populations
D)   providing access to more food resources
E)   reducing encounters with humans

Question 3

Discuss the provisions of the Endangered Species Act of 1973.) In your discussion identify those aspects of the law that have been effective and those that are controversial. Should the ESA be modified? If so, how and why, and if not, why not? Justify your position.

Accepted Answer

The Endangered Species Act (ESA) of 1973...

Question 4

Which of the following is not an ecosystem service?

Accepted Answer

A)   decomposition
B)   seed banks
C)   pollination
D)   maintenance of soil fertility
E)   prevention of soil erosion

Question 5

Discuss why endemic species living on islands are particularly vulnerable to extinction. Then discuss two additional characteristics that make a given species particularly susceptible to extinction. Provide a specific example for each.

Accepted Answer

Many species are endemic to certain isla...

Question 6

Which of the following is an example of a species that was threatened historically due to overexploitation?

Accepted Answer

A)   Guam Rail
B)   American Bison
C)   Brown Tree Snake
D)   Nutria
E)   Water Hyacinth

Question 7

Which of the following is a true statement about chytrid fungus?
I Climate change may be increasing its effects on amphibians
II)  It is responsible for die-offs in more than 500 species
III)  Under certain circumstances, it has infected and killed more than 85% of the amphibians present.

Accepted Answer

A)   I
B)   II
C)   III
D)   I and II are both true
E)   I and III are both true

Question 8

Assisted Colonization is being proposed as a method to prevent species extinction in response to what environmental threat?

Accepted Answer

A)   prevalence of invasive species
B)   global climate change
C)   habitat destruction
D)   overexploitation
E)   all of these choices are correct

Question 9

Most species facing extinction today are threatened because of:

Accepted Answer

A)   living in biodiversity hotspots.
B)   changing climate.
C)   the recent impact of a large comet.
D)   large quantities of dust in the atmosphere.
E)   human activity.

Question 10

Declining biological diversity in the U.S. is most serious in

Accepted Answer

A)   Hawaii (63% of species are at risk)  and California (29% of species are at risk) .
B)   Alaska (58% of species are at risk)  and Washington (32% of species are at risk) .
C)   Montana (46% of species are at risk)  and Texas (38% of species are at risk) .
D)   Florida (52% of species are at risk)  and Louisiana (40% of species are at risk) .
E)   Oregon (49% of species are at risk)  and Wisconsin (34% of species are at risk) . A

Question 11

Humans depend on other organisms for all of the following requirements except:

Accepted Answer

A)   carbon dioxide.
B)   food.
C)   shelter.
D)   medicines.
E)   clothing.

Question 12

The global ban on commercial whaling:

Accepted Answer

A)   went into effect in 1946.
B)   has allowed many populations of whales to recover.
C)   defined the Southern Ocean Whale Sanctuary, where commercial whaling is prohibited.
D)   resulted in the removal of the southern blue whale from the endangered species list.
E)   all of these choices are correct

Question 13

Organisms that provide an early warning of environmental damage are known as:

Accepted Answer

A)   endemic species.
B)   endangered species.
C)   threatened species.
D)   indicator species.
E)   commercial species.

Question 14

What is biotic pollution? Why is it a problem? Discuss one specific example of this type of pollution.

Accepted Answer

Biotic pollution is the introduction of ...

Question 15

Endemic species:

Accepted Answer

A)   are commonly found on islands.
B)   often have small populations.
C)   have few natural defenses.
D)   represent a high percentage of recently extinct (bird)  species.
E)   all of these choices are correct

Question 16

Bacteria and fungi are important to humans because they:

Accepted Answer

A)   help control weeds.
B)   pollinate crop plants.
C)   provide shelter.
D)   deplete nutrient minerals in the soil.
E)   provide foods and antibiotics.

Question 17

Which of the following is a true statement about conservation of tigers in India?

Accepted Answer

A)   Establishment of National Parks has been successful in stopping population declines.
B)   Poaching has been reduced due to strict enforcement and high fines.
C)   Very large undisturbed areas are required to meet the species' hunting needs.
D)   Tigers are not protected by any laws.
E)   Humans and tigers rely on different prey species for food. C

Question 18

Which of the following is a disadvantage of restoration ecology?

Accepted Answer

A)   high cost
B)   long time periods required for restoration to occur
C)   lack of positive results in habitats such as Tallgrass Prairie
D)   Both high cost and the long time periods required for restoration to occur are disadvantages
E)   all of these choices are correct

Question 19

The policy that provides for "taking" of a rare species if it does not threaten the survival or recovery of the endangered or threatened species on that property is the:

Accepted Answer

A)   Endangered Species Act.
B)   Habitat Conservation Plan.
C)   Commercial Extinction Privilege Policy.
D)   World Conservation Strategy.
E)   U.S. Biological Resources Discipline.

Question 20

The single greatest threat to biological diversity is:

Accepted Answer

A)   the introduction of foreign species.
B)   air pollution.
C)   overexploitation.
D)   habitat loss.
E)   water pollution. D

Exam 16: Biological Resources

Deformities in amphibians include all of the following except:

Correct AnswerverifiedShow Answer

All of the following are ecological benefits of habitat corridors EXCEPT:

Correct AnswerverifiedShow Answer

Discuss the provisions of the Endangered Species Act of 1973.) In your discussion identify those aspects of the law that have been effective and those that are controversial. Should the ESA be modified? If so, how and why, and if not, why not? Justify your position.

Correct AnswerverifiedThe Endangered Species Act (ESA) of 1973...View AnswerShow Answer

Which of the following is not an ecosystem service?

Correct AnswerverifiedShow Answer

Discuss why endemic species living on islands are particularly vulnerable to extinction. Then discuss two additional characteristics that make a given species particularly susceptible to extinction. Provide a specific example for each.

Correct AnswerverifiedMany species are endemic to certain isla...View AnswerShow Answer

Which of the following is an example of a species that was threatened historically due to overexploitation?

Correct AnswerverifiedShow Answer

Which of the following is a true statement about chytrid fungus? I Climate change may be increasing its effects on amphibians II) It is responsible for die-offs in more than 500 species III) Under certain circumstances, it has infected and killed more than 85% of the amphibians present.

Correct AnswerverifiedShow Answer

Assisted Colonization is being proposed as a method to prevent species extinction in response to what environmental threat?

Correct AnswerverifiedShow Answer

Most species facing extinction today are threatened because of:

Correct AnswerverifiedShow Answer

Declining biological diversity in the U.S. is most serious in

Correct AnswerverifiedA

Humans depend on other organisms for all of the following requirements except:

Correct AnswerverifiedShow Answer

The global ban on commercial whaling:

Correct AnswerverifiedShow Answer

Organisms that provide an early warning of environmental damage are known as:

Correct AnswerverifiedShow Answer

What is biotic pollution? Why is it a problem? Discuss one specific example of this type of pollution.

Correct AnswerverifiedBiotic pollution is the introduction of ...View AnswerShow Answer

Endemic species:

Correct AnswerverifiedShow Answer

Bacteria and fungi are important to humans because they:

Correct AnswerverifiedShow Answer

Which of the following is a true statement about conservation of tigers in India?

Correct AnswerverifiedC

Which of the following is a disadvantage of restoration ecology?

Correct AnswerverifiedShow Answer

The policy that provides for "taking" of a rare species if it does not threaten the survival or recovery of the endangered or threatened species on that property is the:

Correct AnswerverifiedShow Answer

The single greatest threat to biological diversity is:

Correct AnswerverifiedD

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The Endangered Species Act (ESA) of 1973...
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Many species are endemic to certain isla...
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A

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Biotic pollution is the introduction of ...
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C

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