蘭花考試題庫及答案英語

I.Multiple-choiceQuestions(2pointseach,10questionsintotal)1.Whichofthefollowingisacommonorchidgenus?A.RosaB.OrchisC.TulipaAnswer:B2.Orchidsusuallyprefer___.A.fullsunB.shadyenvironmentC.drysoilAnswer:B3.Mostorchidsreproduceby___.A.seedsB.rootsC.leavesAnswer:A4.Thecolorfulpartofanorchidthatattractspollinatorsisthe___.A.sepalB.petalC.lipAnswer:C5.Orchidsareoftenfoundin___.A.desertsB.rainforestsC.tundrasAnswer:B6.Whatdoorchidsmainlygetfromtheirsymbioticrelationshipwithfungi?A.WaterB.NutrientsC.OxygenAnswer:B7.Whichnutrientisimportantfororchidgrowth?A.NitrogenB.SodiumC.ChlorineAnswer:A8.Thescientificnameofanorchidisbasedon___.A.itscolorB.itsmorphologicalcharacteristicsC.itssmellAnswer:B9.Orchidsneedtobewatered___.A.veryfrequentlyB.moderatelyC.rarelyAnswer:B10.Orchidsareasymbolof___insomecultures.A.purityB.wealthC.courageAnswer:AII.Multiple-selectQuestions(2pointseach,10questionsintotal)1.Whichofthefollowingarecharacteristicsoforchids?A.ComplexflowerstructureB.DiversecolorsC.SymbioticwithfungiAnswer:ABC2.Goodgrowingmediafororchidsinclude___.A.SphagnummossB.BarkC.PerliteAnswer:ABC3.Orchidscanbepollinatedby___.A.BeesB.ButterfliesC.BirdsAnswer:ABC4.Whichenvironmentalfactorsaffectorchidgrowth?A.TemperatureB.HumidityC.LightintensityAnswer:ABC5.Whencultivatingorchids,weneedtopayattentionto___.A.FertilizationB.PruningC.PestcontrolAnswer:ABC6.Somefamousorchid-producingregionsare___.A.SoutheastAsiaB.SouthAmericaC.AfricaAnswer:ABC7.Orchidflowersmayhavedifferentshapeslike___.A.Star-shapedB.Trumpet-shapedC.Bowl-shapedAnswer:ABC8.Toensureorchidhealth,weshould___.A.ProvideproperventilationB.Avoidover-wateringC.RotatethepotregularlyAnswer:ABC9.Orchidsaredividedintodifferenttypesaccordingto___.A.GrowthhabitsB.FloweringseasonsC.OriginsAnswer:ABC10.Orchidhybridsarecreatedfor___.A.BetterappearanceB.StrongeradaptabilityC.NewcolorsAnswer:ABCIII.TrueorFalseQuestions(2pointseach,10questionsintotal)1.Allorchidsareterrestrial.(False)2.Orchidscansurvivewithoutanysunlight.(False)3.Over-fertilizingorchidsisgoodfortheirgrowth.(False)4.Someorchidscanbloomallyearround.(True)5.Orchidsdonotneedalotofwaterduringthedormantperiod.(True)6.Therootsoforchidsarenotsensitivetowaterlogging.(False)7.Orchidshaveaverysimpleflowerstructure.(False)8.Orchidscanbepropagatedbycuttings.(True)9.Differentorchidspecieshavethesametemperaturerequirements.(False)10.Orchidsareonlyusedforornamentalpurposes.(False)IV.Short-answerQuestions(5pointseach,4questionsintotal)1.Whatarethebasicconditionsfororchidgrowth?Answer:Suitabletemperature(usually15-25°C),properlight(nottoostrong),highhumidity,well-drainedgrowingmedia,andappropriatefertilization.2.Whyareorchidsoftensymbioticwithfungi?Answer:Fungihelporchidsabsorbnutrientsfromtheenvironment,especiallyinnutrient-poorareas.Inreturn,orchidsprovidethefungiwithsomeorganicsubstances.3.Howtowaterorchidscorrectly?Answer:Waterwhenthegrowingmediaisalmostdry.Usecleanwateratroomtemperature.Avoidwaterlogging,asitcancauserootrot.4.Whatisthesignificanceoforchidconservation?Answer:Orchidsareanimportantpartofbiodiversity.Manyspeciesareendangered.Conservationhelpsmaintainecologicalbalanceandprotectsuniquegeneticresources.V.DiscussionQuestions(5pointseach,4questionsintotal)1.Discussthechallengesinorchidcultivationforbeginners.Answer:Beginnersmayfaceproblemslikeimproperwatering(over-orunder-watering),incorrectlightmanagement,choosingthewronggrowingmedia,andlackofknowledgeaboutfertilization.Theymayalsohavedifficultyinidentifyingandtreatingpestsanddiseases.2.Howcanweprotectwildorchidsinnature?Answer:Strengthenlegalprotection,raisepublicawarenessofconservation,preventillegalcollectionandhabitatdestruction.Promotesustainablecultivationtoreducethedemandforwildorchids.3.Whataretheimpactsofclimatechangeonorchids?Answer:Climatechangemayleadtotemperatureandprecipitationchanges,affectingorchidhabitats.Itcancauseshiftsintheirdistribution,disrupttheirsymbioticrelationships,andincreasetheriskofextinctionforsomespecies.4.Whyareorchidsso