Question 1

Which of the following is not one of the few remaining areas of unbroken rainforest?

Accepted Answer

A)  The island of New Guinea 
B)  The Congo Basin of Africa 
C)  Western Australia 
D)  The South American Amazonia 
E)  All of the above are unbroken areas of rainforest. 
A)  The island of New Guinea 
B)  The Congo Basin of Africa 
C)  Western Australia 
D)  The South American Amazonia 
E)  All of the above are unbroken areas of rainforest.

Question 2

According to the species-area relationship, a 90 percent loss of habitat will result in _______ loss of the species that live in that habitat.

Accepted Answer

A)  no 
B)  a 10 percent 
C)  a 50 percent 
D)  a 90 percent 
E)  None of the above 
A)  no 
B)  a 10 percent 
C)  a 50 percent 
D)  a 90 percent 
E)  None of the above

Question 3

Use the following to answer questions :
Refer to the diagram below, representing a suitable habitat established for a hypothetical threatened species of pocket gophers.  
-What is the total area of the suitable habitat?

Accepted Answer

The answer of Use the following to answer questions :
Refer...

Question 4

In the Hawaiian Islands, the blood disease _______ has wiped out nearly all low-elevation endemic birds.

Accepted Answer

The answer of In the Hawaiian Islands, the blood disease...

Question 5

Which of the following is not a basic guiding principle of conservation biology?

Accepted Answer

A)  Evolution is the process that unites all of biology. 
B)  The ecological world is dynamic. 
C)  Human beings are part of ecosystems. 
D)  There is a static balance of nature that serves as a goal for conservation efforts. 
E)  All of the above are basic guiding principles. 
A)  Evolution is the process that unites all of biology. 
B)  The ecological world is dynamic. 
C)  Human beings are part of ecosystems. 
D)  There is a static balance of nature that serves as a goal for conservation efforts. 
E)  All of the above are basic guiding principles.

Question 6

Studies of the Tijuana Estuary showed that

Accepted Answer

A)  increased nitrogen in the soil led to greater species richness. 
B)  increased plant cover led to greater species richness. 
C)  increased species richness led to increased plant cover. 
D)  decreased species richness led to increased plant cover. 
E)  decreased nitrogen in the soil led to greater species richness. 
A)  increased nitrogen in the soil led to greater species richness. 
B)  increased plant cover led to greater species richness. 
C)  increased species richness led to increased plant cover. 
D)  decreased species richness led to increased plant cover. 
E)  decreased nitrogen in the soil led to greater species richness.

Question 7

Soon after contact with humans, most large mammals went extinct in

Accepted Answer

A)  North America. 
B)  Australia. 
C)  Hawaii. 
D)  All of the above 
E)  None of the above 
A)  North America. 
B)  Australia. 
C)  Hawaii. 
D)  All of the above 
E)  None of the above

Question 8

Various species are either extinct or threatened in the United States, including certain freshwater mussels, flowering plants, and mammals. Which of the following represents the correct ranking (from most endangered to least endangered) of these groups of organisms?

Accepted Answer

A)  Mussels, plants, mammals 
B)  Mussels, mammals, plants 
C)  Plants, mammals, mussels 
D)  Plants, mussels, mammals 
E)  Mammals, mussels, plants 
A)  Mussels, plants, mammals 
B)  Mussels, mammals, plants 
C)  Plants, mammals, mussels 
D)  Plants, mussels, mammals 
E)  Mammals, mussels, plants

Question 9

Species extinctions matter to human society because

Accepted Answer

A)  more than a quarter of the medical prescriptions written in the United States contain a plant product. 
B)  people derive aesthetic pleasure from interacting with other organisms. 
C)  causing species extinctions raises serious ethical issues. 
D)  biodiversity helps maintain valuable ecosystem services. 
E)  All of the above 
A)  more than a quarter of the medical prescriptions written in the United States contain a plant product. 
B)  people derive aesthetic pleasure from interacting with other organisms. 
C)  causing species extinctions raises serious ethical issues. 
D)  biodiversity helps maintain valuable ecosystem services. 
E)  All of the above

Question 10

The most likely cause of the extinctions of many large mammals in North America in the last 14,000 years is

Accepted Answer

A)  rapid climate change associated with glaciation. 
B)  overhunting by humans. 
C)  the formation of land bridges to neighboring continents that allowed many new species of competitors and predators to invade these regions. 
D)  massive volcanism that caused destruction of the food supply for these mammals. 
E)  pathogens introduced by humans. 
A)  rapid climate change associated with glaciation. 
B)  overhunting by humans. 
C)  the formation of land bridges to neighboring continents that allowed many new species of competitors and predators to invade these regions. 
D)  massive volcanism that caused destruction of the food supply for these mammals. 
E)  pathogens introduced by humans.

Question 11

Effects originating outside the habitat are known as

Accepted Answer

A)  isolating effects. 
B)  principal disturbances. 
C)  secondary disturbances. 
D)  edge effects. 
E)  fragmentations. 
A)  isolating effects. 
B)  principal disturbances. 
C)  secondary disturbances. 
D)  edge effects. 
E)  fragmentations.

Question 12

Which of the following statements about habitat is true?

Accepted Answer

A)  Small patches of habitat are qualitatively similar to patches of larger size. 
B)  Edge effects increase as habitat size increases. 
C)  Habitat loss has no effect on neighboring areas of remaining habitat. 
D)  All of the above 
E)  None of the above 
A)  Small patches of habitat are qualitatively similar to patches of larger size. 
B)  Edge effects increase as habitat size increases. 
C)  Habitat loss has no effect on neighboring areas of remaining habitat. 
D)  All of the above 
E)  None of the above

Question 13

Birds will likely be able to shift their ranges to keep up with climate change because they _______ easily.

Accepted Answer

The answer of Birds will likely be able to shift...

Question 14

The Plimsoll line

Accepted Answer

A)  helped reestablish the California condor. 
B)  is used to keep elephants out of crops in Africa. 
C)  resulted in a dramatic reduction in the rate at which British ships were lost at sea. 
D)  is a useful tool to predict the strength of edge effects. 
E)  is being used by Tucson, Arizona, to protect the bats that roost there. 
A)  helped reestablish the California condor. 
B)  is used to keep elephants out of crops in Africa. 
C)  resulted in a dramatic reduction in the rate at which British ships were lost at sea. 
D)  is a useful tool to predict the strength of edge effects. 
E)  is being used by Tucson, Arizona, to protect the bats that roost there.

Question 15

The best predictor of whether a species will become invasive in its area is

Accepted Answer

A)  its generation time. 
B)  the size of its seeds. 
C)  whether it is invasive elsewhere. 
D)  how many predators it has. 
E)  the size of its native range. 
A)  its generation time. 
B)  the size of its seeds. 
C)  whether it is invasive elsewhere. 
D)  how many predators it has. 
E)  the size of its native range.

Question 16

If tropical rainforests continue to be lost at the present rate, about _______ species are in danger of going extinct during this century.

Accepted Answer

A)  100,000 
B)  300,000 
C)  600,000 
D)  750,000 
E)  1,000,000 
A)  100,000 
B)  300,000 
C)  600,000 
D)  750,000 
E)  1,000,000

Question 17

According to the basic rule of thumb of conservation biology, if 300 species of grasshoppers reside in a habitat of 20,000 ha, about _______ species of grasshoppers should persist if that habitat is reduced to 2,000 ha.

Accepted Answer

A)  30 
B)  60 
C)  90 
D)  150 
E)  270 
A)  30 
B)  60 
C)  90 
D)  150 
E)  270

Question 18

One tool that is used to estimate the probability of extinction resulting from habitat destruction is the _______ relationship.

Accepted Answer

The answer of One tool that is used to estimate...

Question 19

Based on species-area relationships, ecologists predict that

Accepted Answer

A)  about one million tropical evergreen forest species may become extinct in the next hundred years. 
B)  a 90 percent loss of habitat will result in loss of about 9 percent of the species living there. 
C)  the area required by most species will need to be reduced. 
D)  extinction is inevitable. 
E)  None of the above 
A)  about one million tropical evergreen forest species may become extinct in the next hundred years. 
B)  a 90 percent loss of habitat will result in loss of about 9 percent of the species living there. 
C)  the area required by most species will need to be reduced. 
D)  extinction is inevitable. 
E)  None of the above

Question 20

Scientists can determine the historical frequency of fires in an area by

Accepted Answer

A)  examining charcoal in sites of ancient villages. 
B)  measuring carbon in soils. 
C)  radioactively dating fallen tree trunks. 
D)  examining fire scars in growth rings of living trees. 
E)  determining the age structure of forests. 
A)  examining charcoal in sites of ancient villages. 
B)  measuring carbon in soils. 
C)  radioactively dating fallen tree trunks. 
D)  examining fire scars in growth rings of living trees. 
E)  determining the age structure of forests.

Exam 59: Conservation Biology

Which of the following is not one of the few remaining areas of unbroken rainforest?

According to the species-area relationship, a 90 percent loss of habitat will result in _______ loss of the species that live in that habitat.

Use the following to answer questions : Refer to the diagram below, representing a suitable habitat established for a hypothetical threatened species of pocket gophers. -What is the total area of the suitable habitat?

In the Hawaiian Islands, the blood disease _______ has wiped out nearly all low-elevation endemic birds.

Which of the following is not a basic guiding principle of conservation biology?

Studies of the Tijuana Estuary showed that

Soon after contact with humans, most large mammals went extinct in

Various species are either extinct or threatened in the United States, including certain freshwater mussels, flowering plants, and mammals. Which of the following represents the correct ranking (from most endangered to least endangered) of these groups of organisms?

Species extinctions matter to human society because

The most likely cause of the extinctions of many large mammals in North America in the last 14,000 years is

Effects originating outside the habitat are known as

Which of the following statements about habitat is true?

Birds will likely be able to shift their ranges to keep up with climate change because they _______ easily.

The Plimsoll line

The best predictor of whether a species will become invasive in its area is

If tropical rainforests continue to be lost at the present rate, about _______ species are in danger of going extinct during this century.

According to the basic rule of thumb of conservation biology, if 300 species of grasshoppers reside in a habitat of 20,000 ha, about _______ species of grasshoppers should persist if that habitat is reduced to 2,000 ha.

One tool that is used to estimate the probability of extinction resulting from habitat destruction is the _______ relationship.

Based on species-area relationships, ecologists predict that

Scientists can determine the historical frequency of fires in an area by

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