Animals that have no circulatory systems tend to be
A)small.
B)cylindrical.
C)flattened.
D)composed of filaments made of cells.
E)any of these.

Question

Quizplus · Accepted Answer

Animals that have no circulatory systems tend to be small, flattened, or composed of filaments made of cells because these shapes and structures allow for the diffusion of oxygen and nutrients throughout the body without the need for a circulatory system.

Animals That Have No Circulatory Systems Tend to Be