Measuring Populations Answers

Logistic growth curves are density-dependent.

The three methods for determining population size are observation, mark and recapture, and sampling.

A larger population density always indicates a larger population size.

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Which of the following statements about exponential growth curves is true?a.Exponential growth curves are common for R-selected species.b.Exponential growth curves show fast growth rates followed by slow growth rates.c.No organisms in nature experience exponential growth rates.d.Exponential growth curves are S-shaped.

Yellowstone National Park has an average of about 4500 bison living in it. The park covers 3472 square miles. What is the population density of bison living in Yellowstone?a.1.3 bison/mib.16 bison/mic.77 bison/mid.0.77 bison/mi

The mark and recapture method of determining population size is always more effective than the sampling method.

What is the main difference between logistic and exponential growth curves?a.Logistic growth curves never increase exponentially.b.Logistic growth curves stabilize when carrying capacity is reached.c.Logistic growth curves decrease before they increase.d.Logistic growth curves are identical to exponential growth curves.

Which of the following samples has the greatest population density?a.125,000 organisms in 2.5 mib.13,000 organisms in 1.0 mic.150,000 organisms in 4.0 mid.100,000 organisms in 0.5 mi

For which method of determining population size is the population not aware of the sampler’s presence?a.mark/recaptureb.direct observationc.samplingd.indirect observation