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Biological classification, or scientific classification in biology, is a method of scientific taxonomy used to group and categorize organisms into groups such as genus or species. These groups are known as taxa.
Modern classifications of organisms are standardized in a hierarchical system that go from general to specific. Table 9b-1 below describes the detailed classification of the tree red maple. Note that each level of organization is based on some biological characteristic that the organism possesses. Table 9b-1: Hierarchical system of the biological classification of an organism. Category Name Characteristics Kingdom Plantae Organisms that usually have rigid cell walls and usually possess chlorophyll. Subkingdom Embryophyta Plants forming embryos. Phylum Tracheophyta Vascular plants.