Which type of Arthropods have body segments with two pairs of legs connected to a cylindrical body?

Millipedes belong to the class Diplopoda and are characterized by having a cylindrical body with multiple segments, each typically possessing two pairs of legs. This distinct anatomical feature differentiates them from other arthropods. Millipedes generally exhibit a greater number of body segments than centipedes and are known for their slow movement, as they often curl into a spiral when threatened.

In contrast, centipedes have a flat body and each body segment has only one pair of legs. Spiders are arachnids and possess a different body structure without any body segments having paired legs, as they have four pairs of legs. Insects, which are also distinct in their structure, have three body segments (head, thorax, abdomen) and typically only have one pair of legs per segment. Therefore, the characteristics specific to millipedes confirm them as the correct answer.