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Ecology questions

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Question1;Selectoneanswer.;10points;Threeanglersarearguingabouthowalakesfishpopulationshouldbe;managed.Historicallythelakehasbeentotallyclosedtohumanfishing.For;manyyearsithasheldasteadypopulationofabout100,000fish.Managers;areplanningtoopenthelaketofishingwithalimitedharvest.Todecideon;theharvestlimits,theyfirstneedtosetagoal.Selectthestrategythatwould;probablygeneratethelargestsustainableharvestoffisheachyear.;Frankthinksthatitismostimportanttokeepthepopulationsmall;sothefishwontcompetewitheachother.Hethinksthepopulation;sizeshouldbekeptcloseto20,000andrulesshouldbesetsoitwill;notfallbelow10,000.;Ricardothinksthatitwouldbebettertohaveamoderatenumber;offish.Hethinksthatthepopulationshouldbekeptcloseto60,000;fishandrulesshouldbesetsothatthenumberneverdropsbelow;50,000.;Angelathinksthathavingalotoffishinthelakeisthemost;importantthing.Shethinksthepopulationshouldbekeptcloseto;100,000fishandrulesshouldbesetsothatthenumberneverdrops;below90,000.;Question2;Selectoneanswer.;10points;Yeastarefungithatcolonizeoverripe,deadfruit.Theygrowintothefood;source,secreteenzymesthatbreakitsmoleculesdown,andabsorbfood;moleculesthataremadeavailablebythisprocess.Theyare...;Tertiaryconsumers;Decomposers;Producers;Detritivores;Question3;Selectoneanswer.;10points;Thekeyfeatureofsymbiosisisthatthespeciesinquestion...;liveinclosephysicalcontactwitheachother.;harmeachother.;benefiteachother.;dependuponeachotherfortheircontinuedexistence.;Question4;Selectoneanswer.;10points;Whichofthefollowinghavechangedatatimeandinawaythatcanexplain;recentclimatewarming?;Solaractivityaspartofthesunspotcycle.;Greenhousegaslevelsintheair.;Volcanicactivity.;TheshapeofEarthsorbitaroundthesunandthetiltoftheEarth;onitsaxis.;Question5;Selectoneanswer.;10points;Whichofthefollowingislikelytobeafoundationspecies?;Lions;SeaOtters;OakTrees;Allofthese;Question6;Selectoneanswer.;10points;Elementsimportanttolifearecycledthroughlivingthings,air,soil,andwater;buttheydonottakeformasrocks.;False;True;Question7;Selectallthatapply.;10points;WolvesreturntoarivervalleynearYellowstoneNationalParkafteralong;absence.Whichofthefollowingarelikelyconsequences? Selectallthat;apply.Whenwolvesreturn...;survivalanddiversityofyoungtreeswillincreasebecausegrazing;pressurewillbereduced.;abundanceofelkandmoosewillincreasebecausecompetitionwill;bereduced.;diversityofsongbirdsandothertreedwellingspecieswillincrease.;communitydiversitywillcollapsebecausewolveswilleat;everything.;Question8;Selectoneanswer.;10points;Approximatelyhowmuchenergyispassedfromonetrophicleveltobestored;asgrowthinthebodiesoforganismsatthenextlevel?;50%;10%;20%;90%;Question9;Selectoneanswer.;10points;Whichofthefollowingisabiotic?;Plants;Fungi;Rocks;Alloftheseareabiotic;Question10;Selectoneanswer.;10points;Inthecourseofitsbiogeochemicalcycling,lotsofthingscanhappentoa;nitrogenatom.Whichoftheoptionsbelowaccuratelydescribeswhatcannot;happentoit?;Itwillneverbecomeincorporatedintotheproteinmoleculesofa;livingorganism.;Itwillneverbemixedintowaterorbecomepartoftheocean.;Itwillneverbecomepartoftheair.;Itwillneverbedestroyedorconvertedtoanotherelement.;Question11;Selectoneanswer.;10points;Alimitingfactorwilltendtocause...;birthratetoincreaseand/ordeathratetodecrease;bothbirthanddeathratetoincrease;birthratetodecreaseand/ordeathratetoincrease;bothbirthanddeathratetodecrease;Question12;Selectoneanswer.;10points;WhichisthebestanalogyforEarthasaglobalecosystem?Earthislike...;Asealedbuttransparentbox.Energyentersaslightandleavesas;heat,butmatterissealedinaclosedsystemandmustberecycled.;Awirecage.Bothenergyandmattercanfreelyenterandleavethe;Earth.;Aninsulatedandsealedbox.Neitherenergynormattercanenter;orleavetheclosedsystem.;Question13;Selectoneanswer.;10points;Yellowstone Wolf Project Annual Report 2010;Variable;Value in 2010;N (population size);97;annual number of births;38;annual number of deaths;9;total land area;8,987 km 2;Whatisthepercapitabirthratefor2010?;2.6;38;0.004;0.4;Question14;Selectoneanswer.;10points;Respirationandphotosynthesisareanessentialpartofwhichbiogeochemical;cycle?;Carbon;Nitrogen;Water;Phosphorus;Question15;Selectoneanswer.;10points;Whichconsumerpopulationinthesystembelowwouldprobablyhavethe;mostenergyavailabletoit?;Ladybug;Aphid;Toad;Clover

 

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