Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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Which are two ways a population can decrease in size?
a. | immigration and emigration | c. | decreased birthrate and
emigration | b. | increased death rate and immigration | d. | emigration and increased
birthrate |
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2.
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Each of the following is a density-dependent limiting factor EXCEPT
a. | competition. | c. | crowding. | b. | seasonal cycles. | d. | disease. |
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3.
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A disease resulting in the deaths of one third of a dense population of bats in
a cave would be a
a. | density-dependent limiting factor. | c. | density-independent limiting
factor. | b. | result of exponential growth. | d. | nutrient-limiting
factor. |
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4.
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What must occur in a population for it to grow?
a. | The birthrate becomes higher than the death rate. | b. | The birthrate stays
the same and the death rate increases. | c. | The birthrate becomes lower than the death
rate. | d. | The birthrate and the death rate remain the same. |
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5.
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Which of the following would NOT be a limiting factor to the size of a large,
dense population?
a. | a struggle for food, water, space, or sunlight | b. | predator/prey
relationships | c. | a struggle to find shelter from a natural disaster | d. | parasitism and
disease |
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6.
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Which density-dependent factors other than the predator/prey relationship
affected the populations of moose and wolves on Isle Royale?
a. | extreme temperatures for the moose and flooding for the wolves | b. | parasitic wasps for
the wolves and clear-cut forest for the moose | c. | a hurricane followed by drought for both moose
and wolves | d. | food availability for the moose and disease for the
wolf |
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7.
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The giant land tortoises of the Galapagos Islands and sequoias of California
have among the longest life spans of any organisms. This indicates that they likely employ a strategy
of _____.
a. | rapid reproduction | c. | early sexual maturity | b. | slow
growth | d. | all of
these |
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8.
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Unrestricted populations of organisms experience _____.
a. | exponential growth | c. | fertility | b. | linear growth | d. | biotic growth |
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9.
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A population that grows until it reaches its carrying capacity usually has the
shape of an _____.
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10.
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Most of the worldwide human population is growing exponentially because
a. | human populations have not reached their exponential curve. | b. | human populations
have not yet completed the demographic transition. | c. | human populations do not conform to the
logistic model. | d. | science and technology have made it possible. |
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