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34 Cards in this Set

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