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34 Cards in this Set
- Front
- Back
classification of living organisms
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taxonomy
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an estimated __________ organisms live on the planet but only around ________ have been classified
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10 million, 10%
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why classify?
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-ORGANIZATION for study purposes
-common NAMES may be misleading (ex: starfish, jellyfish, goldfish) -scientists need a UNIVERSAL naming system (like metrics) -SHOWS relationships between organisms (evolutionary path) |
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one of the earliest taxonomic systems was set up by ______ around 2000 years ago, based on his limited observation of organisms
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Aristotle
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He divided creatures up into two groups (plants/animals).
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Aristotle
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a swedish naturalist who set up a system on grouping organisms into hierarchal categories, outlined in his Systema Natura
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Carolus Linnaeus
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Linnaeus made Systema Natura; gave everything Latin names for:
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-kingdom
-phylum/division -class -order -family -genus -species |
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"Phylum" is often called ______ in botany (plants)
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"Division"
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"Species" is called a ______ in monera (bacteria)
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"Strain"
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WITHIN a species, there may also be BREEDS, RACES, or VARIETIES that show:
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distinctive phenotypes
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more quantitative evidence as to degree relatedness
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biochemical and genetic similarities
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we can divide Linnaeus's categories even further, if needed:
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-subspecies
-superclass -supphylum -etc. |
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today, every living thing has a universal Latin name, known as:
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binomial nomenclature (2-part name) genus, species
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organizes the tremendous diversity of living things in the context of evolution; kind of a "who's related to whom" system
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systematics
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is a family tree showing the evolutionary relationships thought to exist among groups of organisms (ex: pg 343 figure 18-3)
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phylogenetic tree
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evidence used to classify organisms into such groupings:
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-fossil records
-morphology (structure/forms in organisms) -embryological patterns of development -chromosomes and macromolecules |
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Homo sapiens
Genus species |
capitalize the 1st word but not the 2nd
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a relatively new system of phylogenic classification using certain features of organisms called "shared derived characteristics" to establish relatedness
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cladistics
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the six kingdom system:
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-eubacteria
-fungi -protista -archaebacteria -plantae -animalia |
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Archaebacteria:
1) cell type 2) number of cells 3) nutrition |
1) prokaryotic
2) unicellular 3) both (auto/hetero) |
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Eubacteria:
1) cell type 2) number of cells 3) nutrition |
1) prokaryotic
2) unicellular 3) both (auto/hetero) |
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Protista:
1) cell type 2) number of cells 3) nutrition |
1) eukaryotic
2) mostly unicellular 3) both (auto/hetero) |
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Fungi:
1) cell type 2) number of cells 3) nutrition |
1) eukaryotic
2) mostly multicellular 3) heterotrophic |
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Plantae:
1) cell type 2) number of cells 3) nutrition |
1) eukaryotic
2) multicellular 3) autotrophic |
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Animalia:
1) cell type 2) number of cells 3) nutrition |
1) eukaryotic
2) multicellular 3) heterotrophic |
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algae, kelp, malaria
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Protista
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mushrooms, athlete's foot, yeast, mold
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Fungi
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exodigestion
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Fungi
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Chitin:
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Fungi
Plantae Animalia |
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moss, ferns, pines, flowers/trees
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Plantae
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insects, jellyfish, sponge, humans, cats/dogs, reptiles, snakes, birds, fish
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animalia
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Halophile can survive in:
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salt
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Thermophile can survive in:
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heat
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Acidophile can survive in:
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acid
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