UCONN Biology 1108 Final Exam Questions with Correct Answers 2025

UCONN Biology 1108 Final Exam
Questions with Correct Answers 2025
HaploidWgametesWareWmadeWbyW-WCORRECTWANSWERW-meiosisWinWanimals



AsexualWReproductionW-WCORRECTWANSWERW-BinaryWfissionW(bacteriaWandWarchaea)



BuddingW(yeast,Wetc.)



FragmentationW(someWmolds,Walgae,Wworms,WseaWstarsWandWcorals)



ParthenogenesisW(lotsWofWinvertebratesWandWaWfewWspecialWvertebrates)



AdvantageWofWbeingWasexual?W-WCORRECTWANSWERW-NoWcompetitionWforWmates

NoWspendingWanyWenergyWtoWfindW/WattractWaWmate.



Two-foldWcostWofWsexualWreproductionW-WCORRECTWANSWERW-
Asexual:WeveryoneWproducesWoffspring

ExponentialWpop'nWgrowth



Sexual:WonlyWhalfWtheWpopulationWproducesWoffspring

SlowerWpop'nWgrowth



advantagesWofWsexualWreproductionW-WCORRECTWANSWERW-
1.WItWallowsWorganismsWtoWadaptWfasterWthanWasexualWonesWbecauseWrareWbeneficialWmutationsWt
hatWariseWinWdifferentWorganismsWcanWbeWbroughtWtogether,WincreasingWtheWoverallWfitnessWofWth
eWpopulation.

,2.WItWallowsWaWpopulationWtoWpurgeWitselfWofWharmfulWmutationsWmoreWquicklyWthanWcouldWaWpo
pulationWofWasexualWindividuals.



3.WItWmayWbeWaWmechanismWofWparasiteWdefense—theWRedWQueenhypothesis.



AmnioticWEggW-WCORRECTWANSWERW-



EarlyWdevelopmentWoccursWinWdistinctiveWstages:W-WCORRECTWANSWERW--
WCleavage:WearlyWcellWdivisionsWofWtheWzygote



-WBlastula:WaWhollowWballWfollowingWcleavage

-WGastrula:WaWmultiple-layeredWembryonicWstageWofWdevelopment



LaterWdevelopmentWalsoWoccursWinWdistinctiveWstagesW-WCORRECTWANSWERW--
WlarvaW(inWsome)WaWfree-livingWstageWdifferentWinWformWfrom



differWamongWorganismsWinWtheWamountWof

yolkWandWitsWlocation

theWadultW

-WJuvenileW

-WAdult



___________WinvolvesWcombiningWgeneticWinformationWfromWtwoWindividualsWtoWmakeWaWnewWg
eneticallyWuniqueWindividual.W-WCORRECTWANSWERW-SexualWreproduction



BuddingW-WCORRECTWANSWERW-
involvesWanWunequalWdivisionWbetweenWaWmotherWandWdaughterWcellWorWorganism

,isWfoundWinWfungi,Wplants,WandWanimals



isWaWformWofWasexualWreproduction



InWparthenogenesisW-WCORRECTWANSWERW-unfertilizedWeggsWdevelopWintoWadults



AnimalWgametesWorWsporesWareWproducedWduringWtheWcellularWprocessWreferredWtoWasW-
WCORRECTWANSWERW-meiosis




CellularWlevelWcoordinationWinWcellWform,WcellWinteractions,WandWcellWpositionWoccursWinWtheWdeve
lopmentWofW-WCORRECTWANSWERW-AllWanimals



EachWofWtheWmajorWhypothesesWproposedWtoWexplainWwhyWsexualWreproductionWisWmoreWwidesp
readWthanWasexualWreproductionWultimatelyWbasesWitsWexplanationWonWtheWadaptiveWbenefitWof:W
-WCORRECTWANSWERW-formingWgeneticallyWdistinctWoffspring.



ExamineWFigureW44.1WinWyourWtextWorWonWslidesWinWtheWpdf.WAccordingWtoWthisWphylogeny,Wwhich
WofWtheWfollowingWcorrectlyWlistsWtheWsequenceWinWwhichWmulticellularity,Wtissues,WandWbilateralW


symmetryWarose,WfromWtheWoldestWcharacterWtoWtheWmostWrecentWcharacter?W-
WCORRECTWANSWERW-multicellularity,Wtissues,WbilateralWsymmetry




WhichWofWtheWfollowingWisWaWcharacteristicWexclusivelyWfoundWinWanimals?W-
WCORRECTWANSWERW-gastrula




UnlikeWcnidarians,WtheWcombWjelliesWhaveWanWanterior-
posteriorWaxisW(anW'up'WandW'down'Worientation).WThisWorientationWallowsWforW_______________
___WinWcombWjellies.W-WCORRECTWANSWERW-moreWefficientWnutrientWdigestion

, SpongesWmoveWhugeWvolumesWofWwaterWthroughWtheirWbodiesWeveryWday.WAlthoughWthisWservesW
theWfunctionWofWfilterWfeedingWforWtheWorganism,WhowWmightWthisWalsoWprovideWanW"ecosystemWs
ervice"W(somethingWthatWaffectsWand/orWbenefitsWotherWorganismsWinWtheirWenvironment)?W-
WCORRECTWANSWERW-TheyWcreateWsmallWcurrentsWinWtheirWmicro-


environmentWthatWhelpWtoWcirculateWandWcleanWwaterWlocally.



TheWCambrianWExplosionWofWbiodiversityWoccurredWinWwhatWera?W-WCORRECTWANSWERW-
Paleozoic



InWwhichWtaxonomicWgroupWdoWspongesWbelong?W-WCORRECTWANSWERW-Porifera



_____,WwhichWincludeWlobstersWandWcrabs,WhaveW_____WlegsWand,WinWtheWocean,WfillWmanyWofWth
eWecologicalWrolesWfilledWbyWinsectsWonWland.W-WCORRECTWANSWERW-Crustaceans;Wbranched



WhatWisWtheWpredominantWhypothesisWwhyWanimalsWonlyWappearedWinWtheWfossilWrecordWaboutW
3WbillionWyearsWafterWlifeWoriginated?W-WCORRECTWANSWERW-
AnimalsWhaveWhigherWmetabolisms,WandWanimalWdiversificationWandWevolutionWdidn'tWreallyWhap
penWuntilWthereWwasWsufficientWoxygenWinWtheWatmosphere.



ComparativeWembryologyWhelpedWclarifyWtheWrelationshipsWamongWmajorWgroupsWofWanimals.WT
heWbilaterians,WforWexample,WcanWbeWdividedWintoWtheW_____WbasedWonWtheWdevelopmentalWfate
WofWtheWblastopore.W-WCORRECTWANSWERW-protostomesWandWdeuterostomes




TheWmyriapodsWincludeWtheW_____,WwhichWareWfast-
movingWpredatorsWwithWfrontWlegsWmodifiedWintoWvenomousWfang-
likeWorgans,WandW_____,WwhichWareWslow-movingWherbivores.W-WCORRECTWANSWERW-
centipedes;Wmillipedes



BiologistsWhaveWdescribedWaboutW_____WspeciesWofWeukaryoticWorganisms,WofWwhichWaboutW___
__WareWanimals.WTheWmajorityWofWtheseWareW_____.W-WCORRECTWANSWERW-
1.8Wmillion;W1.3Wmillion;Winsects