Chapter 30 - Animal Origins and the Evolution of Body Plans - 30.2 - Animals Diverged with Distinct Body Plans - 30.2 Recap - Learning Outcomes - Page 643: 2

Segmentation in roundworms and arthropods allows certain body parts to become specialized while boosting the precision of individual movements. This occurs because muscles can independently orient each segment. Certain animals have hydrostatic skeletons, which maintain the form of their bodies using fluid pressure. Furthermore, cephalization and a nervous system offer improved muscle coordination in an organism. Bilaterally symmetric animals benefit from sensory processing from more advanced nervous systems.

Segmentation in roundworms and arthropods allows certain body parts to become specialized while boosting the precision of individual movements. This occurs because muscles can independently orient each segment. Certain animals have hydrostatic skeletons, which maintain the form of their bodies using fluid pressure. Furthermore, cephalization and a nervous system offer improved muscle coordination in an organism. Bilaterally symmetric animals benefit from sensory processing from more advanced nervous systems.