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Kingdom
Kingdom is the highest level on the taxonomic scale. The six kingdoms are Animals, Plants, Fungi, Archaebacteria, Protists and Eubacteria. These distinctions are made by number of cells in the body of the organism, the process of making or finding food and cell type. Complex cells and high number of cells typically applies to plants and animals, while less complicated organisms belong in the bacteria kingdoms. Animals own the largest kingdom at a known 1 million species, while plants come in second with over 250,000 species.
Phylum and Division
The second level of the taxonomic system is either the phylum or the division. The Animal, Protist and Bacteria kingdoms have phyla, while the Plant and Fungi kingdoms contain divisions. The Chordate phylum is all animals with a backbone, and the Arthropod phylum includes all animals with jointed legs and an exoskeleton. The Magnoliophyta division, found in the Plant kingdom, contains all plants with flowers, leaves, stems and roots.
Class
Class is the third largest level on the taxonomic scale. Mammalia is a class within the Chordate phylum. Animals belonging to the Mammalia class have hair and "give milk to their young," according to Michigan State University. A class of the Tracheophyta phylum is the Angiospermae class, which includes flowering plants with a seed enclosed in the ovary.
Order
Plants in any given order are typically closely related, like all soapberry trees and shrubs in the Sapindales order. The Cingulata order in the Animal kingdom contains armadillos, as well as extinct animals like pampatheres and glyptodonts. Another Animal kingdom example of an order is the Rodentia group. Most organisms in an order will have many similar traits and characteristics.