Presentation on theme: "Characteristics of Living Organisms"— Presentation transcript:
1 Characteristics of Living Organisms TEKS 6.12C recognize the broadest taxonomic classification of living organisms is divided into currently recognized DomainsTEKS 6.12D identify the basic characteristics of organisms, including prokaryotic or eukaryotic, unicellular or multi-cellular, autotrophic or heterotrophic, and mode of reproduction, that further classify them in the currently recognized KingdomsCharacteristics of Living OrganismsWhat is one reason people group things into categories?What characteristics do you think scientists look at when classifying organisms?
2 Taxonomy is the science of classifying and naming organisms. A taxonomist is a scientist who classifies or names organisms.
3 Scientists look at characteristics such as… Multi-cellularUnicellularProkaryoticEukaryoticSexual reproductionAsexual reproductionAutotrophicHeterotrophic
4 Important characteristics Kingdom Archaebacteria The following slides review the characteristics of each of the three domains and six kingdoms.Living organismsImportant characteristicsProkaryotic cellsEukaryotic cellsDomain bacteriaDomain ArchaeaDomain EukaryaKingdom AnimaliaKingdom ProtistaKingdom PlantaeKingdom FungiKingdom EubacteriaKingdom Archaebacteria
5 Domain Archaea Kingdom Archaebacteria Prokaryotic – lack a nucleusUnicellular – single celledSome autotrophic, some heterotrophicReproduce asexuallySome live in extreme environmentsHigh salinity (salt content)Low oxygen concentrationsHigh temperaturesHigh or low pHGuts of grazing herbivores- produce methaneMany live in oceans
6 Domain Bacteria Kingdom Eubacteria Prokaryotic – lack a nucleusUnicellular – single celledSome autotrophic, some heterotrophicReproduce asexuallyUsed in food production, oil spill cleanup, and sewage treatment plantsDecomposers – break down dead organismsSome cause disease – strep throat, food poisioning, etc.
7 Domain Eukarya Kingdom Protista Eukaryotic – have a nucleusMost unicellular, some multi-cellularSome autotrophic, some heterotrophicReproduction can be asexual or sexualExamples: amoeba, paramecium, algae, diatoms, and many more
8 Domain Eukarya Kingdom Fungi Eukaryotic – have a nucleusSome unicellular, most multi-cellularHeterotrophicReproduction can be asexual or sexualMany are decomposersExamples: mold, mushrooms, yeast
9 Domain Eukarya Kingdom Plantae Eukaryotic – have a nucleusMulti-cellularAlmost all are autotrophicReproduce sexually and asexuallyMost need sunlight, water, minerals and carbon dioxide to surviveExamples: trees, grasses, mosses, ferns, cactus, etc.
10 Domain Eukarya Kingdom Animalia Eukaryotic – have a nucleusMulti-cellularHeterotrophicMost reproduce sexually but some asexuallyExamples: lizards grasshoppers, spiders, dogs, humans, worms, clams, fish, etc.
11 Fungi or animal Practice question An organism is eukaryotic, multicellular and heterotrophic. In which of the kingdoms would you place this organism?Fungi or animal