The branch of biology that deals with the classification of organisms is called what?

Correct answer: Taxonomy

Correct answer: A, Taxonomy. Taxonomy is the branch of biology concerned with identifying, naming, describing, and classifying organisms. Classification arranges organisms into groups on the basis of shared characteristics and relationships. For example, organisms may be placed in ranks such as kingdom, phylum, class, order, family, genus, and species. Scientific naming, including binomial nomenclature, helps scientists refer to the same organism consistently across languages and regions. Option A is correct because taxonomy specifically deals with the principles and practice of classification. Morphology, option B, studies the external form and structure of organisms, such as the shape of a leaf or the body parts of an animal; it can provide evidence for classification but is not the name of the classification branch itself. Anatomy, option C, studies internal structures and their organisation. Physiology, option D, studies how body parts and organs function. Memory cue: taxonomy = taxon, a group used in classification; morphology means form, anatomy means internal structure, and physiology means function.