Flatworms have a concentration of nerve tissue and organs in one end of the body. what is the name of this characteristic? . the following choices are: nerve nets. . cephalization. . segmentation.

Cephalization

Cephalization is considered an evolutionary trend, whereby nervous tissue, over many generations, becomes concentrated toward one end of an organism. This process eventually produces a head region with sensory organs

The correct answer among the choices listed above is the second option. Flatworms have a concentration of nerve tissue and organs in one end of the body. This characteristic is referred as cephalization. It is a tendency in the development of organisms to localization of important parts in one part.