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1
Regional ecological issues receive greater support than global issues because of their high visibility.
A)True
B)False
2
Acid deposition is the result of agricultural runoff into wetlands.
A)True
B)False
3
The correct sequence of energy flow in a food chain is producer, primary consumer, secondary consumer, and decomposer.
A)True
B)False
4
The energy within any ecosystem is constantly being recycled.
A)True
B)False
5
Bacteria inhabiting the roots of some legumes can fix nitrogen from the air.
A)True
B)False
6
Primary succession occurs only after a disturbance such as fire.
A)True
B)False
7
The ozone shield is formed in the stratosphere by methane, chloroflourocarbons, and other pollutants.
A)True
B)False
8
Which of the following terms best describes all of the plants and animals living in the Grand Canyon?
A)population
B)ecosystem
C)community
D)ecotone
9
In any given food chain, organisms that feed on primary consumers are called
A)producers
B)secondary consumers.
C)decomposers.
D)none of the above.
10
What is the name given to plant chemicals that kill or inhibit disease fungi or bacteria?
A)mycorrhizal fungi
B)hydrophytes
C)phytoalexins
D)ecotones
11
Through which of the following processes is carbon restored to the atmosphere?
A)photosynthesis
B)precipitation
C)evapotranspiration
D)none of the above
12
What is the term used to describe the conversion of atmospheric nitrogen into ammonia by bacteria?
A)denitrofication
B)ammonification
C)nitrogen fixation
D)combustion
13
Succession, which begins on lava, is an example of
A)a xerosere.
B)a hydrosere.
C)secondary succession.
D)a xerophyte.
14
What is the name given to the type of succession that takes place in wet habitats?
A)eutrophication
B)hydrosere
C)xerosere
D)secondary
15
Lake eutrophication is caused by
A)increased siltation and nutrient content of the water.
B)ozone depletion.
C)a loss of climax vegetation.
D)a decrease in organic matter in the lake water.
16
Which of the following is NOT a source of atmospheric methane?
A)anaerobic bacteria in swamps
B)anaerobic bacteria in rice paddies
C)wood-digesting organisms in the guts of termites
D)plastics manufacturing
17
Wild species of our crop plants should be protected because
A)we may need to develop disease-resistant strains from their gene pool.
B)many of them are attractive and make beautiful garden plants.
C)they provide food for other organisms in the ecosystem.
D)they are a part of the wilderness that should be conserved.
18
Which conservationist was instrumental in forming this country's National Park system?
A)Ralph Nader
B)Henry David Thoreau
C)Franklin Roosevelt
D)John Muir





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