How many pairs of legs do millipedes have per body segment?

Millipedes are characterized by having two pairs of legs per body segment, meaning they actually have more than one pair of legs for each segment. This is a defining feature of the class Diplopoda, which includes all millipedes. Their unique body structure, with a cylindrical shape and numerous segments, allows them to have this additional pair of legs, contributing to their distinctive movement style.

The answer provided incorrectly identifies the number of leg pairs as one, while it should be noted that millipedes are known for having two pairs per segment. This feature is contrasted with other arthropods, such as centipedes, which have one pair of legs per segment. The multiple pairs of legs help millipedes navigate through their environments, but the critical detail is specifically the two pairs of legs per body segment that clearly distinguishes them from other similar organisms.