Answer:
Cephalization does not confer an advantage to free-floating or sea organisms. Many aquatic species display radial symmetry like the jelly fish for instance.
Aquatic animals are not cephalized because they must be able to find food, take caution and defend themselves from harm from all directions.
Interactions may be commensalism, mutualism, or parasitism.
<span>The pressure in a plant cell by the central vacuole being filled with water is called pressure</span>
The answer would be water.
