Biology · K-12

Animal Classification and Taxonomy

Taxonomic ranks and major animal classification groups for K-12 life science.

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What are the seven main taxonomic ranks from largest to smallest?
Kingdom, Phylum, Class, Order, Family, Genus, Species
What is the broadest taxonomic rank?
Kingdom
What taxonomic rank comes immediately after Kingdom?
Phylum
What taxonomic rank is more specific than Class?
Order
What is the most specific taxonomic rank?
Species
What taxonomic rank is between Phylum and Order?
Class
What taxonomic rank comes immediately after Family?
Genus
What taxonomic rank is between Order and Genus?
Family
What is the kingdom that includes all animals?
Animalia
What is the largest phylum by number of species?
Arthropoda
What are the three main characteristics of Arthropoda?
Jointed legs, exoskeleton, segmented body
What phylum includes insects, spiders, crustaceans, and centipedes?
Arthropoda
What phylum includes all animals with a backbone?
Chordata
What are the main characteristics of Chordata?
Notochord or backbone, dorsal nerve cord, pharyngeal slits
What phylum includes snails, squid, and clams?
Mollusca

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