Living in the Environment Principles Connections and Solutions 16th Edition By G. Tyler Miller – Test Bank
CHAPTER 9–SUSTAINING BIODIVERSITY: THE SPECIES APPROACH
1. John James Audubon, a 19th Century bird expert, once saw a flock of birds that took three days to fly past him, and darkened the skies as it past. The bird he saw was the
A. bald eagle
C. house sparrow
D. passenger pigeon
E. California condor
2. Approximately 100 years after Audubon’s sighting of the massive flock of birds, the species
A. was biologically extinct
B. was domesticated
C. became a nuisance in New York City
D. became the symbol of the U.S.
E. had spread from the east coast to the west coast of the U.S.
3. The current mass extinction differs from previous mass extinctions in that
A. Genotypes of endangered species are being preserved.
B. The current extinction is caused by humans.
C. It is taking place at a slower rate.
D. Genetic engineering will make recovery easier.
E. It is making the planet healthier.
4. A 2005 report indicates humans have disturbed what percentage of the earth’s land surface?
5. The continuous, low level extinction of species that has occurred since the beginning of life on earth is called
A. continual extinction
B. adaptive radiation
C. background extinction
D. genetic drift
E. stabilizing selection
6. Expressed as a percentage, the estimated background extinction rate before humans, is
A. 1.0 ´ 10-7 %
B. 1.0 ´10-6 %
C. 1.0 ´ 10-5 %
D. 1.0 ´ 10-4 %
E. 1.0 ´ 10-3 %
7. A 2005 report suggests that the current extinction rate is how much larger than the estimated background extinction rate?
A. 2 to 10 times
B. 10 to 30 times
C. 30 to 50 times
D. 50 to 100 times
E. 100 to 1,000 times
8. When so few members of a species remain that it can no longer play its role in the biological communities where it is found, the species has undergone
A. background extinction
B. mass extinction
C. ecological extinction
D. local extinction
E. biological extinction
9. An endangered species
A. may soon become extinct over all or most of its range
B. is one that is evolving into another species
C. is one that may become rare in the next 100 years
D. may eventually become threatened or rare
E. may be considered economically important but rare
10. Four of the following are characteristics that make some species especially vulnerable to ecological and biological extinction. One of the following is not such a characteristic. Choose the one that is not a characteristic.
A. low reproductive rates
B. small territories
C. feeds at high trophic level
D. narrow distribution