Unit Test — Cumulative exam Answers

Which of the following is not a reason that populations display a regular (evenly spaced) distribution? a. territorial behavior b. competition for water c. competition for sunlight d. social behavior Please select the best answer from the choices provided

Natural selection is an evolutionary mechanism by which _______.a.advantageous traits are eliminated in a populationb.advantageous traits become more common in a populationc.inherited traits pass consistently through generationsd.organisms choose which traits to look for in their offspring

There are approximately 30,000,000 white-tailed deer in the United States, which covers 3,536,000 square miles. What is the population density, rounded to the nearest whole number, for the white-tailed deer?a.2 deer per square mileb.4 deer per square milec.6 deer per square miled.8 deer per square mile

Which method to determine population size is the least invasive?a.mark/recaptureb.direct observationc.samplingd.indirect observation

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.

Stabilizing selective pressures result in _______.a.rapid, broad evolutionary changesb.limited evolutionary changesc.an increase in genetic diversityd.extreme gene distributions

Which of the following is not a reason for cluster distribution of organisms?a.localized availability of resourcesb.herd behaviorc.hive behaviord.territorial behavior

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

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

With regards to a “Data (Age) Structure Diagram”, which of the following is an indicator of a rapidly growing population? a. a large elderly population b. a large middle age population c. a large teenage population d. a large child population Please select the best answer from the choices provided

Error

Directional selection only occurs in response to naturally occurring events.

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

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

Which of the following species would you most expect to be distributed according to a regular pattern?a.termitesb.stingless beesc.fishd.creosote bushes

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

When tagging animals specifically for the study of population size, scientists must do all of the following EXCEPT: a. tag all individuals during the first study to ensure accurate results b. make sure that markings do not harm the animal c. ensure that tags are non-toxic and will not come off of the animal d. ensure that the location and color of the tag does not draw the attention of predators Please select the best answer from the choices provided

Which of the following is the most obvious sign of cluster distribution in termites?a.They are insects.b.They are detritivores.c.They are social insects.d.Many species of termites are considered pests.

The native range of a species includes all areas in which it lives.

What are the three common patterns of population distribution?a.clumped, random, and curvedb.evenly spaced, clumped, and curvedc.clumped, evenly spaced, and randomd.random, curved, and evenly spaced