What is the primary characteristic of millipedes that distinguishes them from centipedes?

The primary characteristic that distinguishes millipedes from centipedes is their many small legs. Millipedes typically have two pairs of legs per body segment, which can give them the appearance of having numerous legs overall. This feature contributes to their unique locomotion and body structure. In contrast, centipedes have only one pair of legs per body segment, resulting in a different appearance and movement style.

Focusing on other options, centipedes are known for their swift movement, making the choice regarding speed inaccurate for identifying a key difference. Additionally, while habitat preferences can vary, millipedes typically prefer damp environments and are not primarily found in dry conditions, which further separates them from centipedes, who can tolerate drier habitats.