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how many different organisms are on earth
1.7 million
Classification
the process of grouping things based on their similarities
why do biologists use classification
to organize living things into groups so that its easier to study
Taxonomy
the scientific study of how living things are classified
who was the first man to classify organisms
aristotle
how many groups did aristotle classify the organisms in
3
what were the groups that aristotle classified the organisms in
fly/swim, walk/crawl, run
subgroups
smaller groups of organisms that shared other similarities.
who expanded aristotle’s ideas of classification
Linnaeus
Binomial Nomenclature
each organism is given a two-part name
Genus
is the first part of an organism’s scientific name. It is a classification grouping that contains similar, closely related organisms.
Species
the second part of an organism’s scientific name. It is a group of similar organisms that can mate and produce fertile offspring in nature. A species name sets one species in a genus apart from another
what makes it easy for scientists to communicate about an organism
Binomial nomenclature
how many levels are there in the classification system to classify an organism
8
what are organisms grouped by
shared characteristics
what are the 1st level of classification
domain
what is the 2nd level of classification
kingdom
what is the 3rd level of classification
phylum
what is the 4th level of classification
class
what is the 5th level of classification
order
what is the 6th level of classification
family
what is the 7th level of classification
genus
what is the 8th level of classification
species
what are the 3 domains
bacteria, archaea, and eukarya
what kingdom falls under bacteria
eubacteria
what kingdom falls under archaea
archaebacteria
what kingdom falls under eukarya
protista, plantae, fungi, animalia
Field Guides
books with illustrations that high-light differences between similar-looking organisms.