The brain of a cockroach is represented by

In cockroaches, the brain is represented by supraesophageal ganglion. This structure is located above the oesophagus and serves as the primary centre for processing sensory information and controlling various physiological functions.

The supraesophageal ganglion integrates sensory input from the antennae, eyes, and other sensory organs, allowing the cockroach to perceive its environment and respond accordingly. It also plays a role in controlling motor functions, such as movement and feeding behavior. While it may not be as complex as mammalian brains, the supraesophageal ganglion is essential for coordinating the behaviors and responses of cockroaches.