Corals are members of the Class Anthozoa (in the Phylum Cnidaria). Which statement is true of all anthozoans? They are bilaterally symmetrical They have an oral disc They have both a polyp and medusa body form They can actively swim They have mutualistic zooxanthellae

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Animal Phylogeny

Cladistics is a method of biological classification where organisms are classified based on their ancestors and their relationship with them. It is defined as the concepts and methods for determining the branching patterns of evolution and evolutionary history. Some scientists, however, have preferred the term phylogenetic systematics or phylogenetic taxonomy to emphasize the reliance on a phylogeny for classification. It is the most common and accepted method for classifying organisms.