Unit 26 Review Questions

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1. Who visited South America and recognized that the relationship between changes in altitude and changes in vegetation were interrelated?

E. O. Wilson correct incorrect

Alfred Russel Wallace correct incorrect

Alexander von Humboldt correct incorrect

Thomas Huxley correct incorrect

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2. Which of the following most specifically defines where a species lives, eats, and breeds?

Zoogeographic realm correct incorrect

Range correct incorrect

Habitat correct incorrect

Ecological niche correct incorrect

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3. Why are there different species occupying very similar or identical niches on either side of Wallace's Line?

Wallace's Line occurs in a region of deep ocean waters. correct incorrect

Wallace's Line occurs along a very high mountain range. correct incorrect

Wallace's Line occurs in the middle of an inhospitable desert. correct incorrect

Wallace's Line occurs at a narrow isthmus. correct incorrect

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4. What did R. H. MacArthur and E. O. Wilson discover about species numbers on islands?

The number of species on an island is directly proportional to the island's distance from the equator. correct incorrect

The number of species on an island eventually reaches an equilibrium between new arrivals and extinctions. correct incorrect

The number of species on an island is proportional to the square of the area of the island. correct incorrect

The number of species on an island depends solely on how long the island has been in existence. correct incorrect

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5. What is the newest extinction threat?

Hunting correct incorrect

Destruction of habitat correct incorrect

Climate change correct incorrect

Human population growth correct incorrect

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6. What is the most important way to protect an endangered species?

Protect its niche correct incorrect

Fence it off in a preserve correct incorrect

Ban hunting of the species correct incorrect

Initiate feeding programs for the species correct incorrect