classifying organisms

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.