Primitive nervous system of Coelenterata?

The primitive nervous system of Coelenterata, which includes jellyfish, sea anemones, and corals, is known as a nerve net. This nerve net is a decentralized network of neurons that is spread throughout the body of the organism. It lacks a centralized brain or ganglia.

The nerve net allows for basic sensory perception and coordination of movements. It consists of interconnected neurons that transmit electrical signals to coordinate simple behaviors such as feeding, locomotion, and response to stimuli.

However, it is important to note that the nervous system of Coelenterata is relatively simple compared to more advanced organisms. It lacks specialized structures like a brain or complex sensory organs.