Classification of Life. Why do we need to classify living things? Biologists group living things to make it easier to communicate information while studying.

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Presentation transcript:

Classification of Life

Why do we need to classify living things? Biologists group living things to make it easier to communicate information while studying them to understand their needs, characteristics, and behavior.

How Do We Classify Living Things? Biologists group living things based on similarities in appearance and behavior. A biologist named Carolus Linnaeus started this naming system. He also chose to use Latin words (a language everyone could understand). Living things are constantly being investigated, and sometimes we must change the grouping system. Linnaeus ( ) Swedish scientist who laid the foundation for modern taxonomy

We call this naming system: Taxonomy (from Ancient Greek: taxis = arrangement, nomia = method… “method of arrangement”) Every known living organism on Earth is classified and named by a set of rules. The names are called scientific names, not common names. Common names are “dog” or or “cat.” Scientists call those animals by a set of several names like Canis familiarus. or just a dog… Source:

Taxonomic categories KingdomKing Most general PhylumPhilip ClassCame OrderOver FamilyFor GenusGreen SpeciesSoup Most Specific The naming system uses categories which become more specific…

Taxonomic categories KingdomKing Most general PhylumPhilip ClassCame OrderOver FamilyFor GenusGreen SpeciesSoup Most Specific Here is an example of the scientific naming system… Please, just call me Bubba!

Linnaeus 1735 [1] [1] Haeckel 1866 Chatton 1925 [26][27] [26][27] Copeland 1938 [28][29] [28][29] Whittaker 1969 [7] [7] Finally,… (or is it?) 2 kingdoms3 kingdoms2 empires4 kingdoms5 kingdoms6 kingdoms (not treated) Protista (single-cell) Prokaryota (no nucleus) Monera Bacteria Eukaryota (nucleus) ProtoctistaProtista Protozoa Chromista VegetabiliaPlantae Fungi Animalia History of the Kingdom Classification System

General Classification of Animals *Most of the time we can classify animals in this way. (There are exceptions.)