Presentation on theme: "The link between invertebrates and vertebrates"— Presentation transcript:
1 The link between invertebrates and vertebrates What is a Chordate?The link betweeninvertebrates and vertebrates
2 Objectives Describe characteristics common to animals Describe the characteristics of major animal phylaIdentify on sight members of major animal phylaDefine animal, chordate, vertebrate, invertebrate
3 Characteristics of animals MulticellularEukaryoticHeterotrophicSexual reproductionNo cell wallMotile at some stageRapid response to environmentNerve cellsMuscle cellsBoth
4 Taxonomy Domains: Kingdoms: Sub-groups: Viruses Bacteria X Archaea X Eukarya ProtistsFungiPlants Non-vascularVascular SeedlessGymnospermsAngiospermsAnimals InvertebratesVertebrates
5 Classification 27 Phyla – discuss major ones Grouped as: Invertebrates: NO backbone/vertebral columnVertebrates: backbone/vertebral columnWhat is a backbone and what is a chordate?Backbone: supportative bone structureChordate: has nerve chordWe will cover here:1 last phylumIncludes invertebrates and vertebratesclasses within the chordate phyla
6 Classification Domain Kingdom Phylum Eukarya Animalia Sponges CnidariansFlatwormsRoundwormsSegmented wormsMolluscsArthropodsEchinodermsChordates
7 Classification: Invertebrate (no backbone) Domain Kingdom PhylumEukarya Animalia SpongesCnidariansFlatwormsRoundwormsSegmented wormsMolluscsArthropodsEchinodermsChordates
8 Classification Domain Kingdom Phylum Eukarya Animalia Sponges Segmented wormsMolluscsArthropodsEchinodermsChordates
28 Order: Primates Traits: Family: Hominidae Genus: Homo 1 opposable thumb2 learned behavior3 big brainFamily: HominidaeGenus: HomoSpecies: Homo sapiens
29 Hominids H.habilis H.sapiens Homo ergaster H. heidel- bergensis AustralopithecusafarensisH. neanderthalensisH. erectusA. robustusArdipithecusramidusFigure: 15-13Title:A possible evolutionary tree for humans.Caption:This hypothetical family tree shows skulls and facial reconstructions of representative specimens. Although many paleontologists consider this to be the most likely human family tree, there are several alternative interpretations of the known hominid fossils.. Fossils of the earliest hominid, Ardipithecus ramidus, are too fragmentary to enable reconstruction of a skull; the photo inset is of teeth, which reveal much about the specimen’s relationship to other hominids.A. africanusA. boisei
31 New member of Homo genus Homo florensiensisSmall island in Indonesia: FlorensShort statureGrapefruit sized skullIsland evolutionIsolationInbreedingReduced resourcesLimited competitionGet smallerCo-existed with modern humans until 18,000 years ago.
32 Who are you? Domain: Eukarya Eukaryote Kingdom: Animalia Animal Phylum: Chordata ChordateClass: Mammalia MammalOrder: Primates PrimateFamily: Hominidae HominidGenus: Homo HumanSpecies: sapiens modern
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