Do jellyfish have hearts or brains?

Answer 1

A jellyfish does not have a brain or centralized gathering of nerves. A jellyfish does have a neural net, which is a system of nerves spread out through the body of the animal, and helps the jellyfish maintain its sensory organs and respond to stimuli.

Answer 2

Jellyfish do not have a brain, or centralized gathering of nerves. They do have a nervous system with which to help them maintain their sensory organs and respond to stimuli, however.
Nope

Answer 3

No. They have a nerve 'net' with which they detect light, odour, and with which they taste, sense danger, and move.

A jellyfish does not have a structured brain, but it does have an organized cluster of nerves which serves the same purpose, if on a much smaller scale.

Answer 4

Jellyfish are alot like humans it vairies form jellyfish to jellyfish and may vairie in different species. Though testing has never been done ,we at the marine bioligy society can honestly say that testing will be carried out and we will get back to you as soon as we can.

Answer 5

answ2. One view is that if there is not yet a blood supply, there is no brain.

Earlier than that (evolutionarily) there is certainly a nerve bundle, but this is not yet a brain.

Answer 6

Yes they are! there is a common missconseption about the fact that they don't have brains, to the recent disconvery that they are brains, and soon will take command of the world as we know it.

Answer 7

Jelly fish are capable of certain response to certain stimuli but it would take a very liberal interpretation of the word 'intelligent' to consider these as proof of such.

Answer 8

The box jellyfish have 20 small brains
No, jelly fish as a whole do not have centralized nervous systems.

Answer 9

No.

Answer 10

No