Question 1

Habitats with many edges

Accepted Answer

A)   are the result of natural disasters.
B)   favor animals that prefer interior, forest habitat.
C)   often result from human activities.
D)   result in a significant increase in ecotourism.E) A) and B)
F) A) and C)

Question 2

Suppose a species of wild boar (a type of pig)  is actively hunted when it is at a young age because at that stage of its development the meat of the boar is particularly tender. What is a likely outcome if this species is overharvested?

Accepted Answer

A)   The wild boar population will dwindle because their food source will disappear due to habitat loss.
B)   The wild boar population will increase because older boars will continue to survive.
C)   The wild boar population will dwindle and potentially go extinct if not enough boars that can reproduce are left to mate.
D)   The wild boar population will increase because boundaries will help separate boars from humans.E) C) and D)
F) A) and C)

Question 3

You arrive back in the United States after a visit to a foreign country located on another continent. The customs agent stops the person in front of you and confiscates the fruit basket this person is bringing home. Being the knowledgeable person you are, you calmly explain to your enraged fellow traveler that the reason for the detainment is that the fruit basket may be

Accepted Answer

A)   carrying endangered fruit.
B)   carrying an exotic species that could damage North American ecosystems.
C)   contaminated with chemicals that will damage the ozone layer above North America.
D)   contaminated with sufficient DDT to cause serious harm to anyone who eats the fruit.E) B) and D)
F) A) and B)

Question 4

The primary goal of conservation biology is to

Accepted Answer

A)   estimate the total number of species that exist.
B)   maximize the land set aside for wildlife.
C)   integrate human culture back into nature.
D)   counter the loss of biodiversity.E) None of the above
F) A) and B)

Question 5

Species found in only one place on Earth are called ________ species.

Accepted Answer

A)   hot spot
B)   exotic
C)   keystone
D)   endemicE) A) and B)
F) A) and C)

Question 6

Most biodiversity hot spots are found in ________ regions.

Accepted Answer

A)   western
B)   tropical
C)   temperate
D)   tundraE) A) and C)
F) A) and B)

Question 7

Sustainable development will

Accepted Answer

A)   require making difficult decisions regarding travel to other planets.
B)   require many people to contribute financially.
C)   speed up evolution.
D)   require global, multinational cooperation.E) A) and B)
F) B) and D)

Question 8

The accompanying figure depicts natural fluctuation of ozone levels in Switzerland between 1925 and 1976. Dobson units are a way to measure the total amount of atmospheric ozone above a point on the Earth's surface. What can you conclude from this figure?

Accepted Answer

A)   Natural fluctuation of ozone levels varies greatly year to year, so the average for this 50-year span was approximately 330 Dobson units.
B)   Switzerland can be used as a model example of how to maintain safe ozone levels.
C)   All small European countries will show fluctuations in ozone concentration levels.
D)   Ozone levels show a distinct pattern of increasing by 10 Dobson units every 10 years.E) B) and D)
F) All of the above

Question 9

Which statement about movement corridors is true?

Accepted Answer

A)   Movement corridors can connect otherwise isolated habitat patches.
B)   Movement corridors can promote inbreeding in declining populations.
C)   Movement corridors are detrimental to species that migrate between habitats seasonally.
D)   Movement corridors can prevent the spread of disease.E) C) and D)
F) A) and C)

Question 10

Greenhouse gases include

Accepted Answer

A)   nitrous oxide and oxygen.
B)   nitrogen and oxygen.
C)   carbon dioxide and nitrogen.
D)   carbon dioxide and methane.E) All of the above
F) A) and B)

Question 11

According to this figure, which organisms have the highest concentration of PCBs, and why?

Accepted Answer

A)   phytoplankton, because they are at the bottom of the food chain
B)   herring gulls, because they are at the bottom of the food chain
C)   herring gulls, because they are at the top of the food chain
D)   smelt, because they are in the middle of the food chainE) B) and C)
F) C) and D)

Question 12

Currently, the single greatest threat to biodiversity is

Accepted Answer

A)   global warming.
B)   habitat destruction due to humans.
C)   the introduction of exotic species.
D)   overexploitation of populations for food.E) All of the above
F) B) and C)

Question 13

Which phenomenon is a likely consequence of thinning of the ozone layer?

Accepted Answer

A)   more occurrences of skin cancer
B)   greater escape of heat from Earth
C)   global warming
D)   smaller flying insect populationsE) A) and B)
F) None of the above

Question 14

Which species is an invasive species?

Accepted Answer

A)   pika in the western United States
B)   brown tree snake in Guam
C)   polar bear in Norway
D)   brown pelican off the coast of LouisianaE) B) and C)
F) B) and D)

Question 15

Introduced species are a problem all over the world, and there are many examples in the United States. Several years ago, a fisherman caught a northern snakehead fish in a pond in Crofton, Maryland (a suburb of Washington, DC) . It was suspected that the fish in the Crofton pond were purchased locally and then intentionally released. Snakeheads are top predators, and 90% of the northern snakeheads' diet consists of other fishes. The northern snakehead can breathe out of water and travel short distances (about 100 feet)  across land. They also breed rapidly. Females can lay more than 100,000 eggs per year. Juveniles have also been identified in the Potomac River and other rivers in Pennsylvania.
-When snakeheads enter aquatic ecosystems, biodiversity in these ecosystems would most likely

Accepted Answer

A)   increase, since another species has been added to the environment.
B)   decrease, since the snakehead will prey on native species.
C)   remain the same, since local species will prey on the snakeheads and remove them.
D)   remain the same, because the snakeheads will merge without problems into established communities.E) C) and D)
F) B) and C)

Question 16

The introduction of wolves into Yellowstone National Park in 1991 resulted in

Accepted Answer

A)   a decline in habitat for the entire community.
B)   ecological changes involving numerous plant and animal species.
C)   the migration of most of these wolves out of the park and back to Canada.
D)   the death of all of the wolves, likely due to an insufficient amount of available prey.E) B) and D)
F) B) and C)

Question 17

The average global temperature has risen ________ over the past 100 years.

Accepted Answer

A)   3°C
B)   10°C
C)   5°C
D)   1°CE) A) and B)
F) A) and D)

Question 18

The three greatest current threats to biodiversity, in order starting with the greatest, are

Accepted Answer

A)   habitat loss, overharvesting, and invasive species.
B)   habitat loss, invasive species, and overharvesting.
C)   invasive species, habitat loss, and overharvesting.
D)   invasive species, overharvesting, and habitat loss.E) A) and B)
F) A) and C)

Question 19

Rising concentrations of carbon dioxide (CO2)  in the atmosphere result in the oceans

Accepted Answer

A)   becoming more acidic.
B)   becoming more basic.
C)   containing less dissolved oxygen.
D)   containing less dissolved carbon dioxide.E) A) and D)
F) All of the above

Question 20

Carbon dioxide (CO2)  in the atmosphere is absorbed by ________ and converted into biomass.

Accepted Answer

A)   the ozone layer
B)   other atmosphere gases
C)   photosynthetic organisms
D)   large land massesE) A) and B)
F) A) and C)

Exam 38: Conservation Biology

Most biodiversity hot spots are found in ________ regions.

Correct Answer
verified

Rising concentrations of carbon dioxide (CO₂) in the atmosphere result in the oceans

Correct Answer
verified

Greenhouse gases include

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The primary goal of conservation biology is to

Correct Answer
verified

The introduction of wolves into Yellowstone National Park in 1991 resulted in

Correct Answer
verified

According to this figure, which organisms have the highest concentration of PCBs, and why?

Correct Answer
verified

Currently, the single greatest threat to biodiversity is

Correct Answer
verified

The three greatest current threats to biodiversity, in order starting with the greatest, are

Correct Answer
verified

Sustainable development will

Correct Answer
verified

The average global temperature has risen ________ over the past 100 years.

Correct Answer
verified

Species found in only one place on Earth are called ________ species.

Correct Answer
verified

Suppose a species of wild boar (a type of pig) is actively hunted when it is at a young age because at that stage of its development the meat of the boar is particularly tender. What is a likely outcome if this species is overharvested?

Correct Answer
verified

The accompanying figure depicts natural fluctuation of ozone levels in Switzerland between 1925 and 1976. Dobson units are a way to measure the total amount of atmospheric ozone above a point on the Earth's surface. What can you conclude from this figure?

Correct Answer
verified

Which phenomenon is a likely consequence of thinning of the ozone layer?

Correct Answer
verified

Which species is an invasive species?

Correct Answer
verified

Which statement about movement corridors is true?

Correct Answer
verified

Carbon dioxide (CO₂) in the atmosphere is absorbed by ________ and converted into biomass.

Correct Answer
verified

Habitats with many edges

Correct Answer
verified

Exam 38: Conservation Biology

Most biodiversity hot spots are found in ________ regions.

Correct AnswerverifiedShow Answer

Rising concentrations of carbon dioxide (CO2) in the atmosphere result in the oceans

Correct AnswerverifiedShow Answer

Greenhouse gases include

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The primary goal of conservation biology is to

Correct AnswerverifiedShow Answer

The introduction of wolves into Yellowstone National Park in 1991 resulted in

Correct AnswerverifiedShow Answer

According to this figure, which organisms have the highest concentration of PCBs, and why?

Correct AnswerverifiedShow Answer

Currently, the single greatest threat to biodiversity is

Correct AnswerverifiedShow Answer

The three greatest current threats to biodiversity, in order starting with the greatest, are

Correct AnswerverifiedShow Answer

Sustainable development will

Correct AnswerverifiedShow Answer

The average global temperature has risen ________ over the past 100 years.

Correct AnswerverifiedShow Answer

Species found in only one place on Earth are called ________ species.

Correct AnswerverifiedShow Answer

Suppose a species of wild boar (a type of pig) is actively hunted when it is at a young age because at that stage of its development the meat of the boar is particularly tender. What is a likely outcome if this species is overharvested?

Correct AnswerverifiedShow Answer

The accompanying figure depicts natural fluctuation of ozone levels in Switzerland between 1925 and 1976. Dobson units are a way to measure the total amount of atmospheric ozone above a point on the Earth's surface. What can you conclude from this figure?

Correct AnswerverifiedShow Answer

Which phenomenon is a likely consequence of thinning of the ozone layer?

Correct AnswerverifiedShow Answer

Which species is an invasive species?

Correct AnswerverifiedShow Answer

Which statement about movement corridors is true?

Correct AnswerverifiedShow Answer

Carbon dioxide (CO2) in the atmosphere is absorbed by ________ and converted into biomass.

Correct AnswerverifiedShow Answer

Habitats with many edges

Correct AnswerverifiedShow Answer

Correct Answer
verified

Rising concentrations of carbon dioxide (CO₂) in the atmosphere result in the oceans

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

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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Correct Answer
verified

Correct Answer
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Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Carbon dioxide (CO₂) in the atmosphere is absorbed by ________ and converted into biomass.

Correct Answer
verified

Correct Answer
verified