Science Bowl Question

W) Each body segment is walled off, allowing body fluids to be compressed or expanded by its muscles

X) Each body segment has small holes allowing only small amounts of liquid to move at one time

Y) All body segments are connected, and the muscles contract and release to move the fluid around the worm's body, creating aqueous motion

Z) Anterior body segments are connected but walled off from posterior segments. Muscles control body fluid movement bilaterally