BIO 182 Final Exam with correct answers
Thehumanpopulationhasgrown-✔✔exponentially
Thegrowthofapopulationdependson-✔✔thebirthrateminusthedeathrate
Apopulationstopsgrowingwhenit-✔✔reachesitscarryingcapacity
TrueorFalse?Thecarryingcapacityofapopulationdependsontheresourcesavailableintheenvironment.-
✔✔True
Whenpossible,abluegillpreferstohaveabodytemperaturearound31°C-✔✔True
Whencompetingwithanadult,ajuvenilebluegillwillalwayshavealowerbodytemperaturethanitspreferredte
mperature.-✔✔False
Allelsebeingequal,thecarryingcapacityofalakewouldlikelyincreaseasmorepartsofthelakewarmto31°C.-
✔✔True
Allelsebeingequal,ajuvenilebluegillwilllikelygrowslowerinalakewithmanyadultbluegillsthaninalakewithfe
wadults.-✔✔True
Thegrowthofabluegillpopulationwouldbebetterdescribedbyamodelwithoutdensitydependencethanbyam
odelwithdensitydependence.-✔✔False
Thenumberofwhaleswasmorelikelyestimatedbysamplingthanbymark-recapture.-✔✔False
Theshrinkingpopulationbetween1965and1970couldhaveresultedfromadecreaseinthebirthrateoranincre
aseinthedeathrate.-✔✔True
Thegrowingpopulationbetween1985and1995couldhaveresultedfromadecreaseinemigrationoranincrease
inimmigration.-✔✔True
Between2005and2008,thesumofthebirthandimmigrationratesroughlyequaledthesumofthedeathandemi
grationrates.-✔✔True
Thegrowthofthispopulationwouldbedescribedwellbyanexponentialmodel.-✔✔False
Themodelofcompetitionbetweenspeciescanignorecompetitionwithinspecies.-✔✔False
Thelargerthecompetitiveeffectonaspecies(alphaorbeta),themorelikelythespecieswillpersistduringcompe
tition.-✔✔False
Whentwospecieshavedifferentniches,thecompetitioncoefficients(alphaandbeta)arelikelytobelessthan1.0
.-✔✔True
Iftwospeciescompete,neitherspecieswillreachitscarryingcapacitybeforeoneofthespeciesgoesextinct.-
✔✔True
, Therateofpopulationgrowth(r)determineswhetheraspeciescanpersistduringcompetition.-✔✔False
Arealizednicheisusuallylargerthanafundamentalniche.-✔✔False
Thenumberofreplicatesforeachtreatmentequalsthetotalnumberoflizardsonbothplots.-✔✔False
Treelizardslikelycompetewithcanyonlizards-✔✔True
Treelizardslimittherealizednicheofcanyonlizards-✔✔True
Canyonlizardslimitthefundamentalnicheoftreelizards.-✔✔False
Thetwospeciescoexistbyspatiallypartitioningtheirenvironment.-✔✔True
Coevolutionisthereciprocalevolutionoftwoormorespecies-✔✔True
Diffusecoevolutionoccurswhenonespeciesofplantcoevolveswithonespeciesofpollinator.-✔✔False
WhichofthefollowingobservationsmoststronglysupportsthehypothesisthatantsandAcaciatreeshaveexperi
encedone-on-onecoevolution?-
✔✔Theremovalofeithertreesorantsfromtheenvironmentcausestheextinctionoftheremainingspecies.
Coevolutionhasimportantconsequencesformedicinebecausepathogenscoevolvewiththeirhosts.-✔✔True
Whilespreadingthroughthehumanpopulation,theviralpopulationexperiencesone-on-
onecoevolutionwiththepopulationofhumans.-✔✔False
Whenhumansandvirusesinteractashostandpathogen,respectively,anevolutionarychangeinonepopulation
willresultinselectivepressureontheotherpopulation.-✔✔True
Virusescanbecomelessharmfultohumansthroughnaturalselectioninthehumanpopulationornaturalselecti
onintheviralpopulation.-✔✔True
Iftheimmunesystemofhumansevolvestoreducethereproductionofviruses,theviralpopulationwouldlikelye
xperiencethenaturalselectionofvirusesthatarelessharmfultohumans.-✔✔False
Thedeadliestvirusesforhumansarelikelytobeonesthathavespentlittletimeinfectingthehumanpopulation.-
✔✔True
Akeystonespecies-✔✔stronglyaffectsthestructureofacommunity
Whichofthefollowingscenariosdescribesanindirecteffect?-
✔✔theabundanceofplantsincreaseswhenpredatorslimitherbivores.
Thediagramaboveshowsafoodwebinwhicharrowspointfrompredatorstotheirprey.Basedonthisdiagram,yo
ucanconfidentlyconcludethatincreasingthedensityofspeciesAwill-✔✔decreasethedensityofspeciesB.
Anindirecteffectmustinvolveatleastthreespecies.-✔✔True
ThegreatestdensityofspeciesoccursattheNorthPole.-✔✔False
Speciesinthetropicsshouldhave-✔✔narrownichesbecausetheyexperiencestableconditions.
Thehumanpopulationhasgrown-✔✔exponentially
Thegrowthofapopulationdependson-✔✔thebirthrateminusthedeathrate
Apopulationstopsgrowingwhenit-✔✔reachesitscarryingcapacity
TrueorFalse?Thecarryingcapacityofapopulationdependsontheresourcesavailableintheenvironment.-
✔✔True
Whenpossible,abluegillpreferstohaveabodytemperaturearound31°C-✔✔True
Whencompetingwithanadult,ajuvenilebluegillwillalwayshavealowerbodytemperaturethanitspreferredte
mperature.-✔✔False
Allelsebeingequal,thecarryingcapacityofalakewouldlikelyincreaseasmorepartsofthelakewarmto31°C.-
✔✔True
Allelsebeingequal,ajuvenilebluegillwilllikelygrowslowerinalakewithmanyadultbluegillsthaninalakewithfe
wadults.-✔✔True
Thegrowthofabluegillpopulationwouldbebetterdescribedbyamodelwithoutdensitydependencethanbyam
odelwithdensitydependence.-✔✔False
Thenumberofwhaleswasmorelikelyestimatedbysamplingthanbymark-recapture.-✔✔False
Theshrinkingpopulationbetween1965and1970couldhaveresultedfromadecreaseinthebirthrateoranincre
aseinthedeathrate.-✔✔True
Thegrowingpopulationbetween1985and1995couldhaveresultedfromadecreaseinemigrationoranincrease
inimmigration.-✔✔True
Between2005and2008,thesumofthebirthandimmigrationratesroughlyequaledthesumofthedeathandemi
grationrates.-✔✔True
Thegrowthofthispopulationwouldbedescribedwellbyanexponentialmodel.-✔✔False
Themodelofcompetitionbetweenspeciescanignorecompetitionwithinspecies.-✔✔False
Thelargerthecompetitiveeffectonaspecies(alphaorbeta),themorelikelythespecieswillpersistduringcompe
tition.-✔✔False
Whentwospecieshavedifferentniches,thecompetitioncoefficients(alphaandbeta)arelikelytobelessthan1.0
.-✔✔True
Iftwospeciescompete,neitherspecieswillreachitscarryingcapacitybeforeoneofthespeciesgoesextinct.-
✔✔True
, Therateofpopulationgrowth(r)determineswhetheraspeciescanpersistduringcompetition.-✔✔False
Arealizednicheisusuallylargerthanafundamentalniche.-✔✔False
Thenumberofreplicatesforeachtreatmentequalsthetotalnumberoflizardsonbothplots.-✔✔False
Treelizardslikelycompetewithcanyonlizards-✔✔True
Treelizardslimittherealizednicheofcanyonlizards-✔✔True
Canyonlizardslimitthefundamentalnicheoftreelizards.-✔✔False
Thetwospeciescoexistbyspatiallypartitioningtheirenvironment.-✔✔True
Coevolutionisthereciprocalevolutionoftwoormorespecies-✔✔True
Diffusecoevolutionoccurswhenonespeciesofplantcoevolveswithonespeciesofpollinator.-✔✔False
WhichofthefollowingobservationsmoststronglysupportsthehypothesisthatantsandAcaciatreeshaveexperi
encedone-on-onecoevolution?-
✔✔Theremovalofeithertreesorantsfromtheenvironmentcausestheextinctionoftheremainingspecies.
Coevolutionhasimportantconsequencesformedicinebecausepathogenscoevolvewiththeirhosts.-✔✔True
Whilespreadingthroughthehumanpopulation,theviralpopulationexperiencesone-on-
onecoevolutionwiththepopulationofhumans.-✔✔False
Whenhumansandvirusesinteractashostandpathogen,respectively,anevolutionarychangeinonepopulation
willresultinselectivepressureontheotherpopulation.-✔✔True
Virusescanbecomelessharmfultohumansthroughnaturalselectioninthehumanpopulationornaturalselecti
onintheviralpopulation.-✔✔True
Iftheimmunesystemofhumansevolvestoreducethereproductionofviruses,theviralpopulationwouldlikelye
xperiencethenaturalselectionofvirusesthatarelessharmfultohumans.-✔✔False
Thedeadliestvirusesforhumansarelikelytobeonesthathavespentlittletimeinfectingthehumanpopulation.-
✔✔True
Akeystonespecies-✔✔stronglyaffectsthestructureofacommunity
Whichofthefollowingscenariosdescribesanindirecteffect?-
✔✔theabundanceofplantsincreaseswhenpredatorslimitherbivores.
Thediagramaboveshowsafoodwebinwhicharrowspointfrompredatorstotheirprey.Basedonthisdiagram,yo
ucanconfidentlyconcludethatincreasingthedensityofspeciesAwill-✔✔decreasethedensityofspeciesB.
Anindirecteffectmustinvolveatleastthreespecies.-✔✔True
ThegreatestdensityofspeciesoccursattheNorthPole.-✔✔False
Speciesinthetropicsshouldhave-✔✔narrownichesbecausetheyexperiencestableconditions.
