Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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An example of a cultural service provided by ecosystems is
a. | ecotourism | b. | hunted animals | c. | harvested
plants | d. | protection from erosion |
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2.
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Blueberries are an example of a(n)
a. | ecosystem service | b. | cultural service | c. | environmental
service | d. | ecosystem product |
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3.
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Which of the following statements is true for an ecosystem that is in a state of
equilibrium?
a. | Abiotic conditions are unstable. | b. | Energy is flowing through the ecosystem, and
nutrients are being cycled through the food web. | c. | Photosynthesis and cellular respiration are
unbalanced. | d. | Biomes are in a constant state of change. |
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4.
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The gradual and usually predictable changes in the composition of a community
and the abiotic conditions following a disturbance is called
a. | equilibrium | b. | succession | c. | bioremediation | d. | stewardship |
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5.
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Which of the following statements is true regarding species richness?
a. | A diverse ecosystem will have low species richness. | b. | Species richness
tends to be lower near the equator. | c. | Species richness can be determined by counting
the number of different species in a specific habitat. | d. | Ontario has a higher species richness than the
Amazon rainforest. |
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6.
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A species that no longer exists in a specific area is called
a. | extinct | b. | extirpated | c. | endangered | d. | threatened |
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7.
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Which of the following is an example of a Canadian endangered species?
a. | swift fox | b. | passenger pigeon | c. | wood
bison | d. | polar bear |
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8.
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Approximately what percentage of southern Ontario’s original forest cover
has been lost?
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9.
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Which of the following choices describes the most sustainable ecosystem?
a. | many small areas with a close proximity to each other, easily accessible by roads and
trails | b. | unconnected fragments with little access by roads or trails | c. | one large block with
little access by roads or trails | d. | one large block, easily accessible by roads and
trails |
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10.
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Introduced species with growing populations that have a negative impact on their
environment are what type of species?
a. | endangered | b. | extirpated | c. | threatened | d. | invasive |
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11.
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Which of the following is an example of an ecological impact of invasive
species?
a. | Damage to forests and agricultural crops causes financial loss. | b. | Invasive species
change ecosystem dynamics by altering nutrient cycles or energy flow. | c. | Waterways can become
choked with invasive aquatic plants, rendering them impassable to boats. | d. | Disease-causing
organisms are introduced. |
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12.
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An invasive species of the Pacific island of Guam that was accidentally
introduced and has caused the extinction of many forest birds and half of Guam’s lizard species
is
a. | the brown tree snake | b. | kudzu | c. | the Nile
perch | d. | the feral goat |
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13.
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Which of the following is an example of a chemical control mechanism for use on
invasive species?
a. | physical barriers | b. | removal | c. | intentionally
introduced organisms to control invasive species | d. | pesticides |
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14.
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Which of the methods for cleaning up an oil spill involves the use of
micro-organisms to consume and break down environmental pollutants?
a. | skimming | b. | bioremediation | c. | burning | d. | dispersal
agents |
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15.
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When mature trees are harvested in a series of two or more cuts, it is
called
a. | clear cutting | b. | selective cutting | c. | shelterwood
cutting | d. | none of the above |
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16.
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During forest succession, the plant community would regenerate in the following
sequence:
a. | perennial plants and herbs, shrubs and young trees, pine forest, maple-beech
forest | b. | maple-beech forest, pine forest, shrubs and young trees, perennial
plants | c. | shrubs and young trees, pine forest, perennial plants and herbs, maple-beech
forest | d. | pine forest, maple-beech forest, shrubs and young trees, perennial plants and
herbs |
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17.
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Which of the following statements is true regarding the benefits of
succession?
a. | Succession is completed in a short amount of time. | b. | All human caused
disturbances will be repaired through natural succession. | c. | The original cause
of the disturbance does not need to be eliminated, as long as the damages are
repaired. | d. | Succession allows ecosystems to recover from natural or human-caused
disturbances. |
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18.
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The variety of life found in an area is called
a. | species richness | b. | biological diversity | c. | bioremediation | d. | fragmentation |
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19.
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Which of the following Canadian species have become extinct?
a. | barn owl | b. | Atlantic cod | c. | blue
walleye | d. | red-headed woodpecker |
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20.
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Which of the following is a true statement regarding fragmentation?
a. | Fragmentation of natural ecosystems increases their
sustainability. | b. | In a fragmented ecosystem, less of the habitat area is exposed to outside
pollution. | c. | Fragmentation involves the consolidating of smaller parcels into
one. | d. | When ecosystems are fragmented, species with large home ranges may not have enough
area to survive. |
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