Question 1

What are three things individual humans can do in their daily lives to help protect endangered species?

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Question 2

_______, a well-respected global organization dedicated to conservation of native species and ecosystems worldwide, suggests that to effectively conserve biodiversity humans should focus on protecting _______.

Accepted Answer

A)  Conservation International; all species 
B)  Defenders of Wildlife; hotspots 
C)  Conservation International; hotspots 
D)  Defenders of Wildlife; species on the Red List 
E)  World Wildlife Federation; mammals

Question 3

Refer to the chart below showing the major threats for plants, mammals, and birds that are considered vulnerable to extinction.
 
-Which threats are not caused by direct or indirect actions by humans?

Accepted Answer

A)  Alien invasive species 
B)  Natural disasters 
C)  Alien invasive species and natural disasters 
D)  Direct loss/exploitation 
E)  Atmospheric pollution and intrinsic factors

Question 4

How do species become endangered?

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Question 5

Explain why conservation biology works like repairing a leaky dam.

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Question 6

Which of the following statements about rare species is false?

Accepted Answer

A)  Rare species are found in small numbers or at very low densities. 
B)  Rarity makes species very vulnerable to extinction. 
C)  Some species have always been rare. 
D)  Rare species that lose habitat can become extinct. 
E)  Rare species that have lost many individuals are more vulnerable to chance events such as tornados.

Question 7

More than 34% of the species that have been described and assessed are considered threatened with extinction. Which of the following lists shows the highest proportion of vulnerable species?

Accepted Answer

A)  Amphibians, gymnosperms, fish, and birds 
B)  Gymnosperms, amphibians, fungi, and birds 
C)  Vertebrates, invertebrates, plants, and fungi 
D)  Mammals, birds, amphibians, and gymnosperms 
E)  Fungi, protist species, birds, and mammals

Question 8

Suppose some conservation biologists and volunteers go to a forest in California to remove an invasive plant species from South Africa. This is an example of what type of conservation strategy?

Accepted Answer

A)  Captive breeding and reintroduction 
B)  Removal of disease agents 
C)  Reduction of harvesting 
D)  Habitat restoration 
E)  Inbreeding depression

Question 9

Which of the following statements about endangered species is true?

Accepted Answer

A)  Not all species are equally endangered but all are equally threatened. 
B)  All species are equally endangered and equally threatened. 
C)  Not all species are equally endangered and not all areas are equally threatened. 
D)  All species and all areas are threatened but not equally endangered. 
E)  None of the above

Question 10

Which characteristics may make a species more vulnerable to extinction due to large stochastic change?

Accepted Answer

A)  A tendency to live away from each other and be territorial 
B)  High reproductive rates but small body size 
C)  High population density 
D)  Large body sizes and large areas to live in 
E)  Many large populations and high reproductive rates

Question 11

Prepare a statement that could be used to educate the public about how human population growth and resource consumption is increasing the pressure on the environment and species.

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Question 12

The way conservation biology works can be compared to

Accepted Answer

A)  repairing a leaky dam. 
B)  evolutionary biology. 
C)  rebuilding the engine of a car. 
D)  building a house. 
E)  planting a garden.

Question 13

A population of organisms facing a high risk of becoming extinct because of its population size or rate of population decline due to changing environmental trends or increased predation is considered

Accepted Answer

A)  threatened. 
B)  vulnerable. 
C)  endangered. 
D)  a fire brigade. 
E)  on the "black" list.

Question 14

Are fisheries in decline? Why or why not?

Accepted Answer

A)  Yes, fisheries are in decline because it is difficult to regulate fisheries in international waters. 
B)  No, fisheries are recovering because more consumers are demanding sustainable seafood. 
C)  Yes, fisheries are in decline because invasive species compete with the native fish. 
D)  No, fisheries are recovering as the fish farming industry releases fish into the wild to increase the populations. 
E)  No, fisheries are recovering due to strict international regulations and heavy penalties.

Question 15

Modeling is important in science. How do models help conservation biologists?

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Exam 6: Endangered Species