Ascientist who classifies organisms is called a botanist zoologist taxonomist optometrist

The answer is Taxonomist. Taxonomist is a biologist or a scientist who groups organisms into categories. For example a plant taxonomist may study the origins and relationships between different types of roses while an insect taxonomist may focus on the relationship between different types of insects. Taxonomy is the science of defining and naming groups of biological organisms on the basis of shared characteristics.

The correct answer is called a Taxonomist