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7th grade

Classification Unit (7th Grade)

QuestionAnswer
Aristotle developed the first system of classification; based groups of animals on careful observation
Carolus Linnaeus created a naming system called binomial nomenclature; this system is the modern system used today
classification the grouping of things based on similar characteristics
taxonomy the scientific study of how things are classified
dichotomous key a tool that allows the user to group items with similarities; user is presented with two choices about the characteristics of the unknown organism
binomial nomenclature naming system for organisms in which each organism is given a two-part name – genus and species
scientific name an organism’s name derived through binomial nomenclature Uses the genus and species and written in Latin
genus a classification grouping that consists of a number of similar, closely related species; the first part of an organism’s scientific name
species a group of similar organisms whose members can mate with one another and produce fertile offspring; the second part of an organism’s scientific name
kingdom the largest group of organisms in our modern classification scheme
prokaryote an organism whose cell lacks an enclosed nucleus and other cell structures
eukaryote an organism whose cell/cells contain a nucleus enclosed in a membrane and other cell structures; "true" nucleus
autotroph an organism that makes its own food through photosynthesis (plants)
heterotroph an organism that cannot make its own food and therefore consumes other organisms for food
unicellular a type of organism that is made up of only one cell
multicellular a type of organism that is made up of at least 2 or more cells
Archaebacteria a kingdom of prokaryotic, unicellular, autotrophic or heterotrophic organisms; have the ability to live in some of the harshest conditions on Earth
Eubacteria a kingdom of prokaryotic, unicellular, autotrophic or heterotrophic organisms; these are often the bacteria that causes illness and diseases
Protista a kingdom of eukaryotic, unicellular or multicellular, autotrophic and/or heterotrophic organisms; known as the “odds and ends"
Fungi a kingdom of eukaryotic, unicellular or multicellular, heterotrophic organisms (decomposers)
Plantae a kingdom of eukaryotic, multicellular, autotrophic organisms; these begin most of Earth’s food webs/chains
Animalia a kingdom of eukaryotic, multicellular, heterotrophic organisms; these are found in diverse environments worldwide because of their varied adaptations
Created by: Mrs. Corey