Accelerated Biology Test: Chapter 6
2009-2010
Multiple Choice
Identify the choice that best completes the statement or answers the question.
Table 5-1 shows the population sizes for 6 different species in four different areas.
Area
Species U
Species V
A
3
7
B
0
C
D
Species W
Species X
Species Y
Species Z
2
2
2
4
6
8
0
6
6
0
0
2
0
0
2
4
3
11
1
6
0
Table 5-1
____
1. If the four areas in Table 5-1 were the only places in the world to find these organisms, which species most
likely faces the greatest chance of extinction?
a. Species U
c. Species Y
b. Species X
d. Species Z
____
2. Which area in Table 5-1 has the greatest biodiversity?
a. Area A
c. Area C
b. Area B
d. Area D
____
3. Which of the following is NOT a reason why forests are an important resource?
a. remove CO2 from atmosphere
c. limit soil erosion
b. store nutrients
d. remove oxygen from the atmosphere
____
4. The sulfur and nitrogen compounds in smog combine with water to form
a. ozone.
c. acid rain.
b. ammonia.
d. chlorofluorocarbons.
____
5. The extinction rate of terrestrial and freshwater species is currently higher than the extinction rate of marine
species. What is the most likely reason for this?
a. Human activities have a greater impact on terrestrial and freshwater ecosystems.
b. There are no economic incentives for humans to use ocean resources.
c. Marine organisms have had a longer time to adapt to their environment.
d. The oceans have a greater area than land and freshwater ecosystems combined.
____
6. All of the following are threats to biodiversity EXCEPT
a. introducing toxic compounds
c. invasive species
b. habitat fragmentation
d. species preservation
____
7. The major cause of ozone depletion is
a. nitric acid.
b. sulfuric acid.
c. chlorofluorocarbons.
d. ultraviolet light.
Figure 5-3
____
8. What effect did the loss of species B have on species A and D in Figure 5-3?
a. it caused the populations of A and D to decrease
b. it caused the populations of A and D to increase
c. it caused the populations of A and D to become extinct
d. it had no effect on the populations of A and D
____
9. Examine the graph in Figure 5-3. Which species were not affected by the loss of species B?
a. species A, C, and E
c. species C only
b. species C and E
d. species E only
____ 10. Which of the following resources can be considered renewable?
a. natural gas
c. uranium
b. quartz
d. wood
____ 11. The cheetah population was around 100,000 in 1900. Today, fewer than 12,000 cheetahs remain. What type
of natural resource are cheetahs considered to be?
a. nonrenewable
c. reusable
b. renewable
d. sustainable
____ 12. Which of the following practices can help conserve an area’s biodiversity?
a. biological magnification
c. species introduction
b. habitat fragmentation
d. sustainable usage
____ 13. Some scientists think that global warming is
a. a natural variation in climate.
b. a result of human activity.
c. melting the polar ice caps.
d. all of the above
____ 14. The major threat to biodiversity is
a. habitat fragmentation
b. habitat loss
c. habitat degradation
d. exotic species
____ 15. Acid rain changes the pH of soil, killing some trees. This is an example of
a. habitat fragmentation
c. habitat degradation
b. global warming problems
d. exotic species
____ 16. Which of the following species is extinct?
a. American bald eagle
b. bison (buffalo)
c. passenger pigeon
d. giant panda
____ 17. Salvinia molesta, a floating aquatic plant, first entered Lake Naivasha in Kenya when a person’s fish ponds
flooded. The plant quickly grew, changing the habitat of parts of the lake. This is an example of a problem
due to
a. reintroduction programs
c. habitat fragmentation
b. exotic species
d. edge effect
____ 18. Water and air pollution are examples of
a. habitat fragmentation
b. habitat degradation
c. edge effect
d. sustainable use
____ 19. When species lose their habitats, they may
a. lack food
b. lack shelter
c. be in danger of becoming extinct
d. all of the above
____ 20. The greatest source of air pollution is
a. volcanic eruptions
b. forest fires
c. burning of fossil fuels
d. CFC’s
____ 21. When exotic species are introduced into an area their populations grow exponentially because the species
a. are large
c. lack competitors and predators
b. are predators
d. are small
____ 22. Which of the following sequences is the most likely to occur?
a. endangered species, to threatened species, to extinct species
b. extinct species, to threatened species, to endangered species
c. threatened species, to endangered species, to extinct species
d. threatened species, to extinct species, to endangered species
____ 23. Which of the following animals would be least affected by habitat fragmentation?
a. wolves
c. zebras
b. hawks
d. lions
____ 24. The removal of coral reefs by people is an example of habitat
a. fragmentation
c. loss
b. degradation
d. preservation
____ 25. National parks help prevent the extinction of many species by
a. preserving the species habitats
c. introducing exotic species
b. reducing pollution
d. allowing the sustainable use of resources
____ 26. Materials that are used to soak up oil spills are called
a. booms
c. sorbents
b. skimmers
d. chemical dispersants
____ 27. ______ is used to contain an oil spill.
a. boom
b. skimmer
c. sorbents
d. chemical dispersants
____ 28. Amur honeysuckle and Kudzu are examples of
a. biodiversity
c. exotic species
b. native species
d. endangered species
____ 29. Habitat fragmentation often leads to
a. increased species diversity within an area
b. larger habitats for species
c. decreased species diversity
d. an increased food supply for species
____ 30. What is an example of a renewable resource?
a. air
b. oil
c. coal
d. old growth forest
____ 31. A harmful material that can enter the biosphere through the land, air or water is
a. smog
c. bioremediation
b. pollutant
d. all of the above
____ 32. When cleaning up an oil spill it is best used in calm waters after the use of a boom.
a. sorbents
c. chemical dispersants
b. skimmer
d. boom
____ 33. The variety of life in an area is called
a. species diversity
b. biodiversity
c. genetic diversity
d. animal diversity
____ 34. Renewable sources of energy
a. can replenish themselves naturally.
b. must be created in laboratories.
c. are manufactured from fossil fuels.
d. were never utilized until the 20th century.
____ 35. Coal is considered a nonrenewable resource because it
a. is a fossil fuel.
c. forms over millions of years.
b. can be readily replaced.
d. is polluting.
____ 36. Ozone in the atmosphere
a. leads to formation of acid precipitation.
b. combines readily with water vapor.
c. absorbs harmful radiation from the sun.
d. is a renewable resource.
____ 37. The heat-trapping ability of some gases in the atmosphere can be compared to
a. the melting of snow.
c. condensation because of heating.
b. a greenhouse.
d. heating water on a stove.
____ 38. The extinction of species
a. is a problem limited to the tropics.
b. has been speeded up by the activities of people.
c. is a problem only where topsoil and groundwater are limited.
d. is not a problem today.
____ 39. The steps needed to solve environmental problems include
a. waiting for the affected species to leave an ecosystem that is in trouble.
b. leaving the problems to United Nations committees to address.
c. educating the public about the problems and the costs of their solutions.
d. taking any necessary action, regardless of the consequences or adverse effects.
____ 40. Protecting ecosystem diversity is a goal of
a. the green revolution
b. conservation biology
c. the captive breeding program
d. the United Nations
____ 41. The wearing away of surface soil by water and wind is known as
a. deforestation
c. overgrazing
b. desertification
d. soil erosion
____ 42. Farmers can reduce soil erosion by
a. increasing irrigation
b. contour plowing
c. grazing cattle on the land
d. plowing up roots
____ 43. An endangered species is
a. a diseased animal
b. a group of organisms that are threatened
c. a group of organisms near extinction
d. all organisms at the top of a food chain
____ 44. The African elephant populaiton was greatly reduced between 1970 and 1990 due to
a. habitat degradation
c. habitat loss
b. excessive hunting
d. all of the above
____ 45. What is an example of a nonrenewable resource?
a. water
c. solar
b. air
d. oil
____ 46. Which biome has the most biodiversity
a. grassland
b. deciduous forest
c. conferious forest
d. tropical rain forest
____ 47. This type of pollution originates over a widespread area and is difficult to determine exactly where the
pollution comes from is
a. point pollution
c. direct pollution
b. nonpoint pollution
d. indirect pollution
____ 48. What type of species is on the verge of becoming endangered?
a. extinct species
c. diseased species
b. threatened species
d. all of the above
____ 49. What biome has the least amount of biodiversity?
a. tropical rain forest
c. deciduous forest
b. tundra
d. coniferious forest
____ 50. What is another name for an exotic species?
a. Mrs. Fischer
b. wild
c. dangerous
d. invasive
Accelerated Biology Test: Chapter 6
Answer Section
2009-2010
MULTIPLE CHOICE
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REF: p. 150
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REF: p. 157
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