Question

. Define the term cephalization. How well does the fetal pig conform to this definition in comparison to the Hydra or Dugesia /

Answer 1

The concentration of sense organs, nervous control, etc at the anterior end of the body, forming a head and brain, both during evolution and in the course of an embryo's development.
talking now cephalization process have much more Complex structure It contains the neural system, contains nerves running in the whole body performing the specialized function, other special sensory organs that have a Central nervous system and peripheral nervous system.

hydro on the other half , consist of nerve net A nerve net consists of interconnected neurons lacking a brain or any form of cephalization . Nerve nets can provide animals with the ability to sense objects through the use of the sensory neurons within the nerve net.