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Unit4Wordsrotnectarbatevolveattachmothwaspbeetletypicalvt.&vi.腐烂;腐败n.花蜜;甘露n.蝙蝠vt.&vi.发展;进展;进化vt.缚上;寄上n.蛾n.黄蜂n.甲虫adj.典型的;有代表性的petaltubedelicatefragrantdaisyodourodourlessdullmustyfruityn.花瓣n.管;管子adj.精巧的;脆弱的adj.芬芳的;香的n.雏菊n.气味;香气;臭味adj.没有气味的;无臭的adj.不鲜明的;阴暗的adj.发的;有霉味的adj.果味的;有葡萄味的Expressionsattachtogiveout帖上;附上发出(气味,热等);分发1.Howwouldyoudescribeeachplant?Whatdoyouthinkisunusualabouteachplant?2.Oneofthepicturesshowspitcherplantsandanothershows“livingstones”.Whichpictureshowswhichplant?ThenameoftheplantintheotherpictureisRafflesia.Ingroups,lookcarefullyatthephotosoftheplantsandanswerthequestions.livingstoneRafflesiapitcherplantsNowlistentoMark,GordonandAndreatellingtheirclassabouttheseplants.Whichstudenttalksaboutwhichplant?PlantABCStudent’snameNameoftheplantMarkPitcherplantLivingstonesorLithopsGordonRafflesiaarnoldiiAndrea3Listenagainandcompletethetablewiththecorrectinformation.Youmightneedtolistenseveraltimes.MarkGordonAndreaNameoftheplantReasonforitsnamepitcherplantlivingstonesRafflesiaarnoldiiIt’sshapedlikeapitcher.Theylooklikestones.MarkGordonAndreaItssmellItsshapeItssizelikeapitcherroundedlikerottingmeatonemeterwidesmallroundwithlargethickpetalsMarkGordonAndreaHowitgetsitsfoodWhereitlivesfrominsectsthatfallintothepitcherfromthesoilHotdryplacesinSouthAfrica,NamibiaFromAnotherplantJunglesinpartsofIndonesiaMarkGordonAndreaWhatitsleavesarelikeHowcommonitisHowitispollinatedshapelikepitcherroundlikestonesdoesn’thaveleavesitisbecomingrareInsectsthateatdeadanimalsUNUSUALPLANTTH:TodayMark,GordonandAndreaaregoingtotellusaboutsomeunusualplants.Mark,doyouwanttogofirst?M:Sure.Today,Iwanttotalkaboutaninsect-eatingplantcalledapitcherplant.ListeningtextListentoMark(M),Gordon(G)andAndrea(A)tellingtheirclassandtheirteacher(TH)aboutsomeplants.Here’saphotoofit.Lookatthisparthere.It’sshapedlikeapitcher.It’sactuallyaleafeventhoughitlookslikeaflower.It’sreallyclever---theinsectsareattractedbythesweetsmellcomingfromwhattheythinkisaflower.Butit’satrap.Onceaninsectgoesdownintothepitcher,itcan’tgetoutastherearesmallhardhairspointingdownwardsthatpreventitfromescaping.Intheend,theinsectfallsdownintoapoolofliquidatthebottomofthepitcherandgetsdigestedbytheplant.S1:That’samazing!S2:Whatfantasticplants!TH:Gordon.G:ThesearetheplantsI’mgoingtotalkabout.They’reoftencalled“livingstones”,buteventhoughtheydolookabitlikestones,theyareinfactplants.S3:Wow!S4:Howinteresting!G:TheirscientificnameisLithopsandtheycomefromSouthAfricaandNambia.Thebodyofalithopsisactuallyapairofleavesthathavebecomeroundedlikeastone.Thisisbecausethisplantlivesinveryhotanddryplaces.Whentheleavesareshapedlikethis,notmuchwaterislostfromtheplant.Anotherinterestingthingaboutthesestrangeplantsisthatthey’rethesamecolourandappearanceofthesoilandstonesaroundit.Thismakesthemlessobvioustoanimallookingforfood.TH:Thanks,Gordon.Andrea.A:I’mgoingtotellyouaboutRafflesiaarnoldii,aplantthathasafloweraboutonemetrewide.Infact,it’sthelargestflowerintheworld.Rafflesiaarnoldiidoesn’thaveanyleaves,stemsorroots.Itdoesn’tneedthemasit’saparasite.Itgetsthisfoodbylivingonanotherplant.Youmightthinkthatthisflowershouldsmellwonderfulbutitactuallylooksandsmellslikerottingmeat!S2:Oh,yuck!S1:That’sdisgusting!S3:Ithinkit’sfantastic!A:Metoo.Anyway,itattractsinsectsthateatdeadanimalsbutinsteadofgettingafeed,theinsectspickupitspollenandspreadittootherRafflesias,RafflesiaarnoldiigrowsinthejunglesinIndonesiabutastheforestsarebeingcutdown,it’sbecomingveryrare.TH:ThanksAndreaandthankseveryone.Thoseplantsarecertainlyfascinating.BeeHumming-birdsButterfliesmothAnswerthequestions.1.Whatistheadvantageforanimalsofvisitingflowers?2.Whydosomeplantsneedanimals?Animalsgetfoodcallednectarfromtheflowers.Someplantsneedanimalstopollinatethem.Ananimalpollinatesaflowerbycollectingpollenfromaflowerandpassingitontoanotherflower.3.Howdoesananimalpollinateaflower?4.Whatfeaturesofaflowerareimportantinattractinganimalpollinators?Thefeaturesofaflowerthatareimportantinattractinganimalpollinatorsareitscolour,shape,sizeandsmell.5.Whatisnectar?6.Whatkindsofanimalsaremostflowerspollinatedby?Nectarisasweetliquidproducedbyflowersandcollectedbybees.Mostflowersarepollinatedbybees,mothsandbutterflies.Trueorfalse1.Beesfollowcolouredlinestothenectarinsidetheflower.2.Flowersthatarewhiteorpalecanbeseenbynightpollinators.3.Butterfliesareattractedtosweet-smellingflowers.TTF4.Batspollinateflowersatnight.5.Flowercolourisnotimportanttohummingbirds.6.Allpollinatorsneedtolandonthefloweriftheyaretofindthenectar.TFFFindothernounsinthechartthatmeantheseamas“smell”.Listadjectivesfromthechartthatareusedtodescribedifferentkindsofsmells.Nounsthatmean“smell”:______________.Adjectivesthatdescribesmells:___________________________________________________.odour,perfumedelicate,fragrant,odourless,strong,sweet,musty,fruityABIngroups,lookatthepicturesanddecidewhatkindofpollinatorstheseplantsmighthave.Giveyourreasonsforyouranswers.CDEFGH