Is platyhelminthes less or more sophisticated in cnidarians

Question

Is the nervous system in platyhelminthes less or more sophisticated than in cnidarians? What are the major neural structures found in flat-worms? How is this neural organization significant for the diversity of biological niches explored by the species of phylum?

Answer 1

Platyhelminthes present a much sophisticated nervous system than cnidarians, as the primary neural chords with ganglia (group of neurons) appear, a characteristic of the evolutionary procedure of raised nervous complexity. In platyhelminthes one can note the starting of the cephalization procedure, with a concentration of neurons (or nervous cells) in the anterior part of the body and the appearance of photoreceptor cells in ocelli.

With the raised capacity of such animals to perceive and to interact with surrounds due to the raised complexity of their neural complexity, it is probable to find platyhelminthes in diversity of environments, comprising the terrestrial, and with diverse ways of life, similar to those which are parasites and those which are free-living.