CH 11 VIEW[1]

Living in the Environment: Principles, Connections, and Solutions (with CD-ROM and InfoTrac)

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CHAPTER 11VIEW ONLY Multiple Choice Identify the choice that best completes the statement or answers the question. ____ 1. John James Audubon, a bird expert, saw a flock of ____ that took three days to fly past him and was so dense that it darkened the skies. a. Carolina parakeets b. starlings c. sparrows d. passenger pigeons e. California condors ____ 2. The demise of the passenger pigeon is an example of a. local extinction b. ecological extinction c. biological extinction d. a threatened species e. an invasive species ____ 3. The current extinction crisis differs from previous mass extinctions in that a. ecosystems which store genes for future radiations are being protected. b. the current crisis is caused by the human species. c. it is taking place at a slower rate. d. recovery is likely to be faster because of genetic engineering. e. it is making the planet healthier. ____ 4. Habitat loss may result in extinction over several generations. Which feature of a model is illustrated by this example? a. a positive feedback loop b. a negative feedback loop c. a delay d. an accumulation e. a synergistic interaction ____ 5. Mathematical models indicate that organisms most vulnerable to habitat loss may be the a. producers. b. herbivores. c. decomposers. d. top competitors. e. bacteria. ____ 6. An endangered species is any species that can a. undergo alteration of its genetic traits. b. become rare within the next century. c. soon become extinct in all or part of its range. d. eventually become threatened or rare. e. be considered economically important but is rare. ____ 7. The California condor and whooping crane are a. endangered species. b. threatened species. c. imported species. d. overpopulated species. e. biologically extinct.
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____ 8. The grizzly bear and American alligator are a. endangered species. b. threatened species. c. imported species. d. overpopulated species. e. biologically extinct. ____ 9. The whooping crane is vulnerable to extinction because of a. its small size. b. its call. c. its low reproduction rate. d. its variable migration patterns. e. competition. ____ 10. The timber wolf is extinction prone because of its a. large size. b. specialized breeding areas. c. fixed migratory patterns. d. preying on livestock. e. None of these answers. ____ 11. All of the following characteristics would make a species more prone to extinction except a. low population density. b. small body size. c. specialized niche. d. low reproductive rate. e. fixed migratory patterns. ____ 12. Small populations of species a. may be below the critical population density. b. are vulnerable to catastrophic events. c. may have a reduced evolutionary potential for survival. d.
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CH 11 VIEW[1] - CHAPTER 11VIEW ONLY Multiple Choice...

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