二〇一三年中国喘咳宁片行业发展回顾

《二〇一三年中国喘咳宁片行业发展回顾》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、CarnivorousPlants:ScienceFictionorScience??Whatintheworldisacarnivorousplant?Mustbeabletoattract,captureandkillanimals(mostlyinsects)AlsomustdigesttheanimalCansurvivewithouteatingmeat,though.Mostaresmall(<1mtall)butonevinespeciescangrowtobe10mlongWhereintheworldcanIfindtheseplants?Everywher

2、eexceptAntarctica!!MoreabundantinAustralia,southeastAsiaandNorthAmericaEvenAlachuacountyhasthem!!600speciesandsub-species,butnotallrelatedtoeachotherLet’sReview...1)Whatarethe4traitsofacarnivorousplant?Theyattract,capture,killanddigestanimals2)Donon-carnivorousplantsshareanyofthesetraits?Non

3、-carnivorousplantscanattractinsects3)Dotheyneedtoeatmeattosurvive?No-theyhavebeengrowninlabswithoutmeat4)Whereintheworldcanyoufindtheseplants?EverywhereexceptAntarctica5)Howmanyspeciesarethere?Aretheyallrelated?600speciesandsub-species;theyarenotallrelated(convergentevolution)Whathabitatdoth

4、eylivein?ThegenusUtriculariaisaquatic(freshwater)Mainlyfoundinnutrientpoorwetlands(ex.Bogs)DecayingplantsreleaseacidiccompoundsMicroorganismscannotfunctionDifficultforplantstogetnutrientsfromacidicsoilWhyaren’tallplantsmeat-eaters?Carnivorousplantshaveanadvantageovernon-carnivorousplantsinnu

5、trientpoorhabitatsInhabitatswithmorenutrients,non-carnivorousplantsdobetterbecausetheydonothavetoputenergyintospecialstructures.Let’sReview...1.Whatisthemostcommonhabitatofcarnivorousplants?Nutrientpoorwetlands.2.Whatfeatureoftheirhabitatallowedthemtoevolvecarnivory?Thelackofnutrientsavailab

6、leinthesoil.3.Whydoesthehabitathavethisfeature?pHofwaterislow,sobacteriacannothelpdecomposeplantsandplantscannottakeupnutrientsaseasily.4.Whydonon-carnivorousplantsdobetterinhabitatswithmorenutrients?Becausetheydonothavetoputenergyintospecialstructurestocapturepreylikecarnivorousplantsdo.Wha

7、tanimalsdotheyeat?MostlyInsectsandspiders(gnats,flies,moths,wasps,spiders,butterflies,beetlesandants)FreshwaterspecieseatsmallwateranimalsandfishandmosquitolarvaeSomecapturesmallamphibians(frogs)andsmallbirdsandrodentshavebeenfoundinsometropicalspe