Question

The simplest nervous systems are called....

Answer 1

The simplest nervous systems are called
`\sf\purple{nerve \:nets}`.

More:-

• This type of nervous system is found in
  `\sf\red{hydras}` and
  `\sf\blue{jellyfish}` (cnidarians).
• Nerve nets do not have a distinct central or peripheral regions, and lack anything that resembles a brain.

`\circ \: \: { \underline{ \boxed{ \sf{ \color{green}{Happy\:learning.}}}}}∘`