It is hypothesized that this process is an adaptation for a predatory lifestyle. It is primarily seen in bilaterally symmetrical animals; however, some radially symmetrical animals such as hydras have a primitive form of it. It is present in planarians as two nodes located at the front of a ladder shaped system. Some echinoderms exhibit it in the larval stage, while the sea cucumber retains it as an adult. FTP, name this 
It is hypothesized that this process is an adaptation for a predatory lifestyle. It is primarily seen in bilaterally symmetrical animals; however, some radially symmetrical animals such as hydras have a primitive form of it. It is present in planarians as two nodes located at the front of a ladder shaped system. Some echinoderms exhibit it in the larval stage, while the sea cucumber retains it as an adult. FTP, name this evolutionary process in which sense organs and a central nervous system concentrate in the head of an animal.          |
It is hypothesized that this process is an adaptation for a predatory lifestyle.
{Cephalization}