动物分类英文版.ppt

ClassificationofAnimals,AnimalsWithBackbones,MAMMAL,FISH,REPTILE,BIRD,AMPHIBIAN,Animalswithbackbonesarecalledvertebrates.Vertebratesincludemanydifferentkindsofanimals.Theycanbefoundjustabouteverywhereinoceans,rivers,forests,mountains,anddeserts.Animalswithbackbonescanbebrokenupintosmallergroupsbycharacteristics.Theyare:,AnimalsWithBackbones,Fish,FishCharacteristics,Theyarethelargestgroupofvertebrates.Theycomeinmanysizesandshapes.Manyfisharecoveredwithscalesthatprotectsthem.Theyhavefinsthathelpthemtosteerandbalanceinthewater.Theirbodytemperaturesvaryinthewater.Theybreathethroughgills.,Amphibians,AmphibianCharacteristics,Theirbodytemperaturevarieswiththeirsurroundings.Amphibianshatchfromeggsandtheycanliveonlandasanadult.Youngamphibiansbreathethroughgillslikefish.Adultamphibiansbreatheairfromlungs.Somehavesmoothmoistskin.,Reptiles,ReptileCharacteristics,Reptilescanmoveatvariousspeeds.Theylaytheireggsonland.Theyhavedryscalyskin.Theycanincludeanimalsaslargeasacrocodile.Theirbodytemperaturevarieswiththeirenvironment.Theyliveinhot,drydesertsandinwarm,wettropicalrainforests.,Birds,BirdCharacteristics,Birdslayhardshelledeggsthathatchintheirnest.Thereareabout9,000typesofbirds.Birdsarevertebratesthathavewingsandtheyarecoveredwithfeathers.Nootheranimalhasthisfeature.Thebirdsskeletonisverylightinweight.Thishelpsthemtofly.Birdsrangeinsizefromassmallasyourfingeroraslargeasahuman.,Mammals,MammalCharacteristics,Theyincludeawiderangeofanimals:ape,lions,kangaroos,bats,andetc.Theiryounggrowsinsidethemother.Humansaremammalsbutthey(animals)havemorehairthanwedo.Thehairkeepstheanimalswarm.Theyfeedmilktotheiryoung.,Invertebrates,InvertebrateClassification,WhatisanInvertebrate?Invertebratesareanimalsthatdonothavebackbones.97%oftheanimalkingdomismadeupofinvertebrates.Somecanbefoundinponds,oceans,andotherwaterenvironments.Insectsandsomeotherinvertebrateshaveexoskeletons.,AnExoskeletonisahardoutercoveringthatprotectsananimalsbodyandgivesitsupport.Therearesixgroupsofinvertebrates.Theyare:,Sponges,SpongesCharacteristics,Theylooklikeplantsbuttheyareanimals.Spongesstayfixedinoneplace.Theirbodiesarefullofholesandtheirskeletonismadeofspikyfibers.Waterflowsthroughtheholesoftheirbodywhichenablesthemtocatchfood.,Corals,Hydras,andJellyfish,Characteristics,Coralslooklikeplantsbuttheybelongtotheanimalkingdom.Theyhavesofttubelikebodieswithasingleopeningsurroundedbyarmlikepartscalledtentacles.Theyfeedbycatchingtinyanimalsintheirtentacles.Hydrashavetentaclesthatcatchtheirfood.Theymovefromplacetoplace.Hydrasaremuchsmalleranimals.Jellyfishcatchshrimp,fish,andotheranimalsinitstentaclesalso.,Worms:Flatworms,Roundworms,andSegmentedworms,WormCharacteristics,Wormsaretube-shapedinvertebrateswhichallowsthemtobeputintogroups.Theycanbefoundinbothlandandwaterenvironments.,Flatworms,Theyhaveaheadandatail,andflattenedbodies.Atapewormisaflatwormthatcanliveinsidethebodyofanimalsandhumans.Itcancauseyoutobecomesick.,Roundworm,Theyhaveroundedbodies.Theyliveindampplacesandtheycanalsoliveinsidehumansandotheranimals.Theytoocanmakepeopleandotheranimalssick.,Segmentedworms,Theearthwormbelongstothisgroupofworms.Theirbodiesaredividedinsegments,orsections.Theypreferburrowingthroughmoistsoil.Thisallowsthemtomoveeasilyanditkeepsthemfromdryingout.,StarfishandSeaUrchins,Characteristics,Itbelongstoagroupofinvertebratesthathavetinytubefeetandbodypartsarrangedaroundacentralarea.Astarfishhasfivearmsandnohead!Thehard,spinycoveringofthestarfishgivestheanimalprotection.Aseaurchinbelongstothissamegroup.Itsbodyiscoveredwithspines.,Mollusks,MolluskCharacteristics,Amolluskhasahardshell,aroughtongue,andamuscularfoot.Asnailisamolluskwithasinglehardshell.Aclamhastwoshellsjoinedtogetherbyahinge.Squidsandoctopusesarealsomollusk.Theirhardshellsaresmall,buttheyareinsidetheirbodies.,Arthropods,ArthropodCharacteristics,Arthropodsareagroupofinvertebrateswithjointedlegsandhardexoskeletonthatprotectthearthropod.Asitgrows,itmolts,orshedsitsoldexoskeleton.Thenitgrowsanewexoskeletonthatallowsitsbodytocontinuetogrow.Alobsterisanarthropod.Thelargestgroupofarthropodsareinsects.,Arthropods:Insects,Spiders,andCentipedes/Millipedes,Theyaretheonlyinvertebratesthatcanfly.Insectshavebodiesdividedintothreeparts,andsixlegs.Spidershavejointedlegs(eightlegs),jawsandfangs.Centipedesandmillipedesarealsoarthropods.Centipedesusesitsmanylegstorunfromenemies.Millipedesrolluptheirbodieswhentheys