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Classification Why Classify?
To study the diversity of life, biologists use a classification system to name organism and group them in a logical manner.
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Domains All living organisms are divided into 3 domains and subdivided into 6 kingdoms Domains containing prokaryotic cells Archaea Bacteria Domain containing eukaryotic cells Eukarya
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Naming Organisms In the discipline of taxonomy scientists classify organisms and assign each organism a universally accepted name. Common names of organisms vary, so scientists assign one name for each species. Always in Latin. Carolus Linneaus developed a naming system called binomial nomenclature.
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Naming Organisms Canis familiaris Canis lupus Felis catus
In binomial nomenclature, each species is assigned a two part scientific name. The scientific name is italicized. The first name is the genus name. It shows that organisms are closely related The second name is the species name. It is specific to a particular organism. Canis familiaris Canis lupus Felis catus
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Linnaeus's System of Classification
Linnaeus not only named species, he also grouped them into categories. Categories are based on characteristics that organisms shared 7 categories in order from largest to smallest Kingdom Phylum Class Order Family Genus Species To remember the categories in order use the following: King Philip came over for great soup.
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Linnaeus's System of Classification
Each level is called a taxon, or taxonomic category. Species and genus are the two smallest categories. Organisms that share the same genus are most closely related to each other. Grizzly bear Black bear
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Red fox Grizzly bear Black bear Giant panda Sea star Coral snake Abert squirrel Kingdom Phylum Class Order Family Genus Species
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Eubacteria Prokaryotic Unicellular
Autotrophic/heterotrophic/chemosynthetic Reproduce asexually Contain cell wall containing peptidoglycan Some are mobile Largest and most diverse kingdom Live everywhere Eubacteria
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Bacteria Bacillus (rod shaped)
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E. coli
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Plaque bacteria
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Streptococcus
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Archaebacteria Prokaryotic Unicellular
Autotrophic/heterotrophic/chemosynthetic Reproduce asexually Contain cell wall does not contain peptidoglycan Some are mobile DNA similar to eukaryotes Live in extreme environments Some are anaerobic (live without oxygen)
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Under water sea vent
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Hot springs
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Protists Unicellular/multicellular Heterotrophic/autotrophic
Some have cell wall, chloroplasts, cilia, or flagella Reproduce sexually or asexually Some are mobile Eukaryotic
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Amoeba
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Amoeba
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Paramecia showing food vacuoles containing dyed yeast.
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Paramecium – X-rated
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Diatoms……..my fav!
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Different diatoms
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Dinoflagellates
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Red tide
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Algae – multicellular protist
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Kingdom Fungi Unicellular/multicellular Heterotrophic Eukaryotic cells
Other Cell wall Decomposer Reproduce sexually or asexually No chloroplasts Non-mobile
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Yeast
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M U S H R O
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Cool pic
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Bracket fungus
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White fungus Tree fungus Honeycomb fungus
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Bird’s nest fungus Those aren’t eggs, they’re spores; kinda like seeds. Isn’t it cutie?
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Plants Multicellular Autotrophic Eukaryotic Other Cell wall
Chloroplasts Reproduce sexually or asexually Non-mobile
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Above: Rafflesia - one of the rainforest’s largest flowers
Above: Rafflesia - one of the rainforest’s largest flowers. 3 ft across and hold 6-7 qts. of water. Right: world’s smallest plant; 12 can fit on head of a pin (enlarged lower right)
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Another really big flower
Another really big flower! It smells like rotting flesh mixed with burnt sugar…nice! Big cactus!
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Unique Flowers
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This is a plant. It has no chlorophyll. It has no photosynthesis
This is a plant! It has no chlorophyll! It has no photosynthesis! It’s weird! It’s a parasite! It used to be classified as a fungus!
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Animals Eukaryotic Multicellular Heterotrophic Other No cell wall
No chloroplasts Reproduce sexually or asexually Most are mobile
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Glass Sponge
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Sea sponge
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Coral
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Coral polyps
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Coral polyps
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Echinoderms
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Star Fish Feeding
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Little tube feet
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Tube feet up close and personal
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Sea feather
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Live sand dollar
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Sea cucumber….. Ewe!
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Giant clam
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Clams with foot extended
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Sea worms
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Sea worms
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More sea worms
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nudibranch
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nudibranch
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More nudis!!
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Last one
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Insect carrying eggs
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Duck-billed platypus with babies
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Spiny ant eater (echidna)
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Echidna egg in pouch
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Vocabulary Assignment
Classification Taxonomy Domain Kingdom Species Bacteria Protist Autotroph Flagella Cilia Heterotroph Amoeba
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