Question 1

Which characteristic is displayed by small populations of species?

Accepted Answer

A)  They have a large and diverse gene pool. 
B)  They are not vulnerable to catastrophic events. 
C)  They may have an increased evolutionary potential for survival. 
D)  Their population density may be below critical levels. 
A)  They have a large and diverse gene pool. 
B)  They are not vulnerable to catastrophic events. 
C)  They may have an increased evolutionary potential for survival. 
D)  Their population density may be below critical levels.

Question 2

When species become endangered,it is an indicator that the health of vital ecosystems is beginning to unravel or decline.

Accepted Answer

A) True 
 B)False

Question 3

What are alligators called if their population is so depleted that organisms which depend on alligator habitat for their survival are also suffering?

Accepted Answer

A)  locally extinct 
B)  endangered 
C)  threatened 
D)  ecologically extinct 
A)  locally extinct 
B)  endangered 
C)  threatened 
D)  ecologically extinct

Question 4

Which species would be affected by the fragmentation of tropical forests?

Accepted Answer

A)  raccoons 
B)  cowbirds 
C)  migrating songbirds 
D)  skunks 
A)  raccoons 
B)  cowbirds 
C)  migrating songbirds 
D)  skunks

Question 5

Why was the Carolina parakeet exterminated?

Accepted Answer

A)  because it was an alien species 
B)  because it spread histoplasmosis, a fungal disease 
C)  because it fed on fruit crops 
D)  because it carried a viral disease that killed domesticated parakeets 
A)  because it was an alien species 
B)  because it spread histoplasmosis, a fungal disease 
C)  because it fed on fruit crops 
D)  because it carried a viral disease that killed domesticated parakeets

Question 6

What is a limiting factor of CITES?

Accepted Answer

A)  It only applies to larger urban centres. 
B)  It is unclear which species are covered. 
C)  Much of the illegal wildlife trade occurs in countries that have not signed the treaty. 
D)  Member countries cannot exempt themselves from protecting any species. 
A)  It only applies to larger urban centres. 
B)  It is unclear which species are covered. 
C)  Much of the illegal wildlife trade occurs in countries that have not signed the treaty. 
D)  Member countries cannot exempt themselves from protecting any species.

Question 7

​Which statement is true about the situation involving Spotted Owls in B.C.?

Accepted Answer

A)  ​The B.C. government used SARA to protect Spotted Owls in their old growth habitat. 
B)  ​Logging of old growth forests was allowed provided that foresters followed strict guidelines designed to protect wild populations of Spotted Owls. 
C)  ​A captive breeding program is run that has produced large numbers of Spotted Owls to add to the wild population. 
D)  ​By 2013, the wild population of Spotted Owls had dwindled to only about 10 birds. 
A)  ​The B.C. government used SARA to protect Spotted Owls in their old growth habitat. 
B)  ​Logging of old growth forests was allowed provided that foresters followed strict guidelines designed to protect wild populations of Spotted Owls. 
C)  ​A captive breeding program is run that has produced large numbers of Spotted Owls to add to the wild population. 
D)  ​By 2013, the wild population of Spotted Owls had dwindled to only about 10 birds.

Question 8

What is an outcome of the general perception that flowers are beautiful?

Accepted Answer

A)  It is evidence that wildflowers have ecological importance. 
B)  It is evidence that wildflowers have medical importance. 
C)  It is evidence that wildflowers have genetic importance. 
D)  It is evidence that wildflowers have aesthetic importance. 
A)  It is evidence that wildflowers have ecological importance. 
B)  It is evidence that wildflowers have medical importance. 
C)  It is evidence that wildflowers have genetic importance. 
D)  It is evidence that wildflowers have aesthetic importance.

Question 9

What is the greatest species terminator?

Accepted Answer

A)  destruction of tropical forest habitat 
B)  destruction of coral reef habitat 
C)  destruction of grassland habitat 
D)  destruction of desert habitat 
A)  destruction of tropical forest habitat 
B)  destruction of coral reef habitat 
C)  destruction of grassland habitat 
D)  destruction of desert habitat

Question 10

What would NOT be likely to cause the reduction and possible extinction of wildlife populations?

Accepted Answer

A)  increased human population growth 
B)  increased poverty 
C)  governmental policies that undervalue ecological services 
D)  sustainable development 
A)  increased human population growth 
B)  increased poverty 
C)  governmental policies that undervalue ecological services 
D)  sustainable development

Question 11

Speciation or extinction could be the result of habitat fragmentation.

Accepted Answer

A) True 
 B)False

Question 12

When a large number of species is lost over a relatively short time span,such as a few centuries,this situation is described as:

Accepted Answer

A)  an eco-catastrophe 
B)  an extinction spasm 
C)  a major death sequence 
D)  an extinction sink 
A)  an eco-catastrophe 
B)  an extinction spasm 
C)  a major death sequence 
D)  an extinction sink

Question 13

What percentage of all species that ever existed are now extinct?

Accepted Answer

A)  99.9% 
B)  85% 
C)  60% 
D)  30% 
A)  99.9% 
B)  85% 
C)  60% 
D)  30%

Question 14

A reconciliation project to help the grizzly bear is also a precautionary strategy.

Accepted Answer

A) True 
 B)False

Question 15

What is the role of COSEWIC?

Accepted Answer

A)  It helps prevent the importation of endangered species. 
B)  It estimates projected climate changes. 
C)  It provides expert assessments of species at risk in Canada. 
D)  It legally binds signatory governments to reversing the global decline of biological diversity. 
A)  It helps prevent the importation of endangered species. 
B)  It estimates projected climate changes. 
C)  It provides expert assessments of species at risk in Canada. 
D)  It legally binds signatory governments to reversing the global decline of biological diversity.

Question 16

Which type of species offers the opportunity to apply the precautionary strategy?

Accepted Answer

A)  an endemic species found in only one part of the world 
B)  an indicator species 
C)  a keystone species 
D)  an alien species 
A)  an endemic species found in only one part of the world 
B)  an indicator species 
C)  a keystone species 
D)  an alien species

Question 17

The extinction of a keystone species would lead to the extinction of other forms of life.

Accepted Answer

A) True 
 B)False

Question 18

Why might the biodiversity in wildlife reserves be depleted in a few decades?

Accepted Answer

A)  climate change brought about by global warming depletes biodiversity 
B)  demands for sport trophies depletes biodiversity 
C)  biological magnification of pesticides depletes biodiversity 
D)  the use of fossil fuels depletes biodiversity 
A)  climate change brought about by global warming depletes biodiversity 
B)  demands for sport trophies depletes biodiversity 
C)  biological magnification of pesticides depletes biodiversity 
D)  the use of fossil fuels depletes biodiversity

Question 19

Which statement describes habitat islands?

Accepted Answer

A)  They can NOT be national parks, protected areas, or freshwater lakes. 
B)  They are wildlife preserves set aside to sustain endangered species. 
C)  They can create small populations that are resistant to inbreeding. 
D)  They are often too small to support the minimum number of individuals required to sustain a population. 
A)  They can NOT be national parks, protected areas, or freshwater lakes. 
B)  They are wildlife preserves set aside to sustain endangered species. 
C)  They can create small populations that are resistant to inbreeding. 
D)  They are often too small to support the minimum number of individuals required to sustain a population.

Question 20

When a species has disappeared from the Earth,it is biologically extinct.

Accepted Answer

A) True 
 B)False

Exam 12: Sustaining Biodiversity: the Species Approach

Which characteristic is displayed by small populations of species?

When species become endangered,it is an indicator that the health of vital ecosystems is beginning to unravel or decline.

What are alligators called if their population is so depleted that organisms which depend on alligator habitat for their survival are also suffering?

Which species would be affected by the fragmentation of tropical forests?

Why was the Carolina parakeet exterminated?

What is a limiting factor of CITES?

​Which statement is true about the situation involving Spotted Owls in B.C.?

What is an outcome of the general perception that flowers are beautiful?

What is the greatest species terminator?

What would NOT be likely to cause the reduction and possible extinction of wildlife populations?

Speciation or extinction could be the result of habitat fragmentation.

When a large number of species is lost over a relatively short time span,such as a few centuries,this situation is described as:

What percentage of all species that ever existed are now extinct?

A reconciliation project to help the grizzly bear is also a precautionary strategy.

What is the role of COSEWIC?

Which type of species offers the opportunity to apply the precautionary strategy?

The extinction of a keystone species would lead to the extinction of other forms of life.

Why might the biodiversity in wildlife reserves be depleted in a few decades?

Which statement describes habitat islands?

When a species has disappeared from the Earth,it is biologically extinct.

Environmental Problems: an Introduction and Overview

Environmental History: Learning From the Past

Science, systems, matter, and Energy

Ecosystems: What Are They, and How Do They Work

Evolution and Biodiversity

Climate and Terrestrial Biodiversity

Aquatic Biodiversity

Community Ecology

Population Ecology

Applying Population Ecology: the Human Population

Sustaining Terrestrial Biodiversity: Managing and Protecting Ecosystems

Sustaining Aquatic Biodiversity

Food and Soil Resources

Water Resources

Geology and Nonrenewable Mineral Resources

Nonrenewable Energy Resources

Energy Efficiency and Renewable Energy

Risk,toxicology,and Human Health

Air Pollution

Climate Change and Ozone Loss

Water Pollution

Pest Management

Solid and Hazardous Waste

Sustainable Cities

Economics, environment, and Sustainability

Politics, environment, and Sustainability

Environmental World-views, ethics, and Sustainability

Filters

Which statement is true about the situation involving Spotted Owls in B.C.?