Which end forms first in ontogeny is a criterion used to classify animals into protostome and deuterostome.

Linnaeus developed systematic methods for classifying and naming plants and animals.

Every episode classifies animals into categories for which they are known best.

It has not always been obvious that the natural way to classify animals was hierarchical.

Humans everywhere classify animals and plants into obvious species-like groups.

Naturalists find new species and classify plants and animals.

Students are taught to measure soil quality, monitor tree renewal and classify plants and animals.

The treaty classifies heavily traded animals into three categories:

Taxonomists use Latin words to classify various animals into such categories as kingdom, phylum, class, order, family, genus, and species.

Taxonomists use Latin words to classify various animals so that scientists who speak different languages can communicate discoveries more easily.