Uniramia is the largest class of animals on Earth,
comprising of at least three fourths the animals on the planet. It
includes insects, millipedes, centipedes, etc. Uniramians are
characterized by having uniramous, or single branched, appendages. The
majority of uniramians are terrestrial, although a few species are
aquatic.
Insects are the most numerous group of animals on the
planet. They have several common features. Most have a body with the
three main sections: the head, which usually has a pair of antennae as
well as eyes; the thorax, which has three pairs of legs; and the
abdomen, which usually has two pairs of wings. |
