Determining Population Size Answers

Tagging animals is indicative of which type of method to determine population size?a.mark/recaptureb.direct observationc.samplingd.indirect observation

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

Which of the following is a density-independent factor?a.diseaseb.predationc.natural disastersd.stress

A J-shaped curve is called a(n) _______.a.logistic growth curveb.exponential growth curvec.linear growth curved.population growth curve

Logistic growth curves are density-dependent.

The formula to calculate population density is _______.a.land area number of populationsb.number of populations land areac.number of organisms in a region land area d.land area number of organisms in a region

Which of the following methods involves counting the number of organisms in a specific area?a.mark/recaptureb.direct observationc.samplingd.indirect observation

The equation total # of people in an area/(land) area in km2(or mi2) is used to calculatea.growth rateb.population densityc.death rated.carrying capacity

A larger population density always indicates a larger population size.

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.