Page 45 - Science Course 1 (Book 1)
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Mo2-L1b: Classification of Living Things
CLASSIFICATION OF EASTERN CHIPMUNK
Taxonomic Number of EXAMPLES
Group Species
Domain about 4 - 10
Eukarya million
Kingdom about 2 million
Animalia
Phylum
Chordata about 50,000
Class
Mammalia about 5,000
Order
Rodentia about 2,300
Family
Sciuridae 299
Genus Tamis 25
Species Tamis 1
Striatus
Organism
A dichotomous key is a tool used to identify an
organism based on its characteristics
Dichotomous keys contain descriptions of traits Six Legs Does not
that are compared when classifying an organism. have six legs
Have antennae No antennae
Large hind No Large
legs for hind legs for
hopping hopping
Grasshopper Ant
Key Concept
How are living things classified?
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