Which of the following does not exhibit a rolling behavior when disturbed?

The correct answer is centipedes. Centipedes do not exhibit a rolling behavior when disturbed, unlike the other options listed. They possess elongated bodies and many legs, which allow them to react more aggressively to threats by fleeing rather than curling up.

In contrast, millipedes, sow bugs, and pill bugs exhibit a defensive rolling behavior when they feel threatened. Millipedes can coil their bodies, sow bugs can curl into a ball, and pill bugs have a distinctive ability to roll into a tight ball as a protective maneuver. This rolling behavior serves as a defense mechanism against predators, effectively hiding their vulnerable body parts. In contrast, centipedes rely on their speed and agility to evade danger rather than relying on a rolling response.