资料简介
WorkbookReadingtaskUnit4,Discussthequestion:What’stherelationshipbetweenplantsandanimals?WarmingUp,Co–Evolutionyucca丝兰,yuccamoth,TheTraveller’sPalm棕榈树,TheMadagascarblacklemur,TheOphrysOrchid兰花,wasp,1.What’sthetopicofthetext?2.Whatthreeplantsarefeatured?3.Whatdothephotosshowyou?4.Whatthreeanimalpollinatorsarefeatured?Pre-readingBeforeyoureadthetext,glancequicklythroughitandanswerthesequestions.,What’sthetopicofthetext?2.Whatthreeplantsarefeatured?Co-evolution.Theyucca,theTraveller’sPalm,andtheOphrysorchid.,3.Whatdothephotosshowyou?4.Whatthreeanimalpollinatorsarefeatured?Yuccaflowers,aTraveller’sPalm,andanOphrysorchid.Theyuccamoth,theMadagascarblacklemur,acertainkindofwasp(themale,notthefemalewasp).,FirstreadingNowreadthetextmorecarefullyandanswerthesequestions.Whycannootheranimalsbuttheyuccamothpollinatetheyucca?It’sonlytheyuccamothwhichistherightsizeandshapetopollinatetheyucca.,2.CanyouguesswhytheTraveller’sPalmhasthatname?TheTraveller’sPalmhasthisnamebecausetravellersusedtodrinkitsnectarwhentheywerethirsty.3.Whatdoyouthink“sweettooth”means?Ifapersonorananimalhasa“sweettooth”,theylikesweetfoodverymuch.,4.Whydothemalewaspstrytomatewiththeorchidflowers?Themalewaspstrytomatewiththeorchidflowersbecausetheylooklikeandsmelllikefemalewasps.,5.Whydothefemalewaspsvisittheorchidflowers?Dotheyhavearoleinpollination?Thefemalewaspsvisittheorchidflowerstocollectthechemicalthatthemalewaspswereattractedtoearlier.Thefemalewaspsdonothavearoleinpollinationsincetheflowersaredyingwhentheyvisitthem.,SecondreadingNowreadandthinkabouttheadvantagesanddisadvantagesoftherelationshipsbetweentheplantsandpollinationsdescribedinthetext.Checkyourunderstandingandcompletethetable.,Plant/pollinatorAdvantagesDisadvantagesYuccaMothTheyuccaiscertaintobepollinated.Themoth’scaterpillarshaveacertainsupplyoffoodTheyaretotallydependentoneachotherforsurvival.,Plant/pollinatorAdvantagesDisadvantagesTraveller’spalmLemurThepalm’sflowercanbeopenedbythelemur.Thelemurhasasourceoffood.Thereisadisadvantageforthepalmonlyiftherearenolemursorotheranimalspresentstrongenoughtoopentheflowers.,Plant/pollinatorAdvantagesDisadvantagesOrchidWaspTheorchidiscertaintobepollinated.Theyaretotallydependentoneachotherforsurvival.Thefemalewaspscollectachemicalfromtheorchidneededtoattractthemalestothem.,DiscussionDiscusswhatyouthinkwouldhappentotheanimalpollinatorsofeachoftheplantsdescribediftheseplantsdiedout.,Suggestedanswers:Theyuccaandtheyuccamoth:Ifyuccaplantsdiedout,theYuccamothwouldalsodieoutasthecaterpillarsneedtheyuccaseedsforfood.,IftheTraveller’spalmdiedout,theMadagascarblacklemurwouldnotdieoutasitcanfindothersourcesoffood.TheTraveller’spalmandtheMadagascarblacklemur:,TheOphrysorchidandthewasp:IftheOphrysorchiddiedout,thewaspwouldalsodiedoutasthefemalewaspneedsthechemicalproducedbytheorchidtoattractthemalewasps.,Thankyou.
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