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This overview of biological classification introduces the division of organisms into distinct groups based on shared characteristics. It covers key principles such as taxonomy, the science of naming and classifying living organisms. The text also explains different kingdoms: Archaebacteria (extreme bacteria), Eubacteria (common prokaryotes), Protista (mostly unicellular eukaryotes), Fungi (non-green eukaryotic decomposers), Plantae (green, photosynthetic organisms), and Animalia (multicellular organisms capable of movement). This classification system helps us understand the diversity of life on Earth.
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Vocabulary Review Ch 9 Classification
The division of organisms into groups, or classes, based on specific characteristics Classification
The science of describing, naming, and classifying organisms Taxonomy
An aid that is used to identify organisms and that consists of the answers to a series of questions Dichotomous key
A kingdom made up of bacteria that live in extreme environments Archaebacteria
A kingdom that contains all prokaryotes except archaebacteria Eubacteria
A kingdom of mostly one-celled eukaryotic organisms that are different from plants, animals, bacteria, and fungi Protista
A kingdom made up of non-green, eukaryotic organisms that have no means of movement, reproduce by using spores, and get food by breaking down substances in their surroundings and absorbing the nutrients Fungi
A kingdom made up of complex, multicellular organisms that are usually green, have cell walls made of cellulose, cannot move around, and use the sun’s energy to make sugar by photosynthesis Plantae
A kingdom made up of complex, multicellular organisms that lack cell walls, can usually move around, and quickly respond to their environment Animalia