c l a s s i f i c a t i o n
DESCRIPTION
C l a s s i f i c a t i o n. Modified By Ms. Hundley. The science of classifying organisms is called taxonomy The “father of modern taxonomy” was Carolus Linnaeus (Carl von Linné ) Organisms are grouped into “ taxa ” based on their similarities to each other. 1707-1778. Old System. - PowerPoint PPT PresentationTRANSCRIPT
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ClassificationModified By Ms. Hundley
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• The science of classifying organisms is called taxonomy
• The “father of modern taxonomy” was Carolus Linnaeus (Carl von Linné)
• Organisms are grouped into “taxa” based on their similarities to each other
1707-1778
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Old System
• 5 Kingdom Classification System:– Monera: all prokaryotes– Protista: single-celled
eukaryotes (protists)– Fungi: multi-cellular
heterotrophic sessile eukaryotes
– Plantae: multi-cellular autotrophic sessile eukaryotes
– Animalia: multi-cellular heterotrophic motile eukaryotes
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6 Kingdom Proposal
Archebacteria
Eubacteria
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New Classification
• Organisms are grouped into smaller and smaller groups all the way down to their species
• A species is the most specific grouping and includes only organisms that can interbreed with each other and produce fertile offspring
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Ursus americanus
American Black Bear
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Often Latin names contain clues about the type of
organism being described.
Canis domesticus
And closely related organisms are often in the same genus, also giving clues about their
names
Canis lupus
Some names are given after the discoverer, or the
discovery location, or even a Latinized descriptive term in
English
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Domain Eukarya
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Kingdom Protista
Amoeba Paramecium Giardia
Water Mold Slime Mold
Euglena DinoflagellatesDiatomBrown AlgaeGreen Algae
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Kingdom Fungi
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Kingdom Plantae
Bryophyte (Moss)
Pteridophyte(Fern)
Pteridophyte(Fern)
Coniferophytes (Pine Trees) Angiosperm;
DicotAngiosperm;
Monocot
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Human Classification
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Human Classification
Domain: Eukarya
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Primates
Family: Hominidae
Genus: Homo
Species: Sapien
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Dichotomous Keys
1a. Organism has 4 legs Go to # 2
1b. Organism has more than 4 legs Go to # 20
2a. Organism has a tail Go to # 3
2b. Organism has no tail Go to # 35
3a. Organism has stripes Bengal Tiger
3b. Organism has no stripes African Lion
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Dichotomous Key• Try this one:
1a. Organism walks on all 4 legs (quadruped) 2
1b. Organism walks on 2 legs (biped) 8
2a. Organism has visible fur 3
2b. Organism has no visible fur 20
3a. Organism lives in warm climates 7
3b. Organism lives in cold climates 4
4a. Organism has brown or black fur Ursus americanus
4b. Organism has white fur Ursus maritimus