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1.
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Which phrase best describes the focus of ecology?
a. | individual organisms | b. | individual cells | c. | interactions among
organisms | d. | interactions among cells |
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2.
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What is the term for a group of different species in a given area?
a. | population | b. | ecosystem | c. | community | d. | biome |
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3.
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Which level of organization in ecology is a major regional or global community
of organisms?
a. | an ecosystem | b. | population | c. | community | d. | biome |
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4.
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Studying a virtual ecosystem on a computer is an example of
a. | experimentation. | b. | modeling. | c. | surveying. | d. | observation. |
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5.
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Which of the following is the best example of an observation study?
a. | a quadrat sample | b. | a laboratory experiment | c. | a computer
program | d. | a population model |
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6.
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Which of the following is an example of a biotic factor in an ecosystem?
a. | sunlight | b. | stream | c. | tree | d. | rock |
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7.
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Wind is considered to be an abiotic factor because it
a. | is not related to biodiversity. | b. | is a nonliving thing. | c. | is in
equilibrium. | d. | is not in any ecosystem. |
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8.
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A rain forest has a high level of biodiversity because it has
a. | many abiotic factors. | b. | some endangered species. | c. | few connections
between living things. | d. | a wide variety of living
things. |
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9.
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A keystone species is a species that
a. | goes unnoticed if its numbers decrease. | b. | alters an area by
building bridges and dams. | c. | leads to a decrease in an area's
biodiversity. | d. | has an unusually large impact on its ecosystem. |
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10.
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Beavers are sometimes trapped for their fur. What could be one effect of
increased trapping of beavers in an area?
a. | Biodiversity among the area's fish would increase. | b. | The number of herons
and kingfishers would decrease. | c. | There would be more nesting areas for
waterfowl. | d. | More trees would be cut down. |
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