Jellyfish don't have brains
Starfish do not have brains. Instead they have a cluster of nerves called ganglia.
Being more specific than the person before me, I am doing a science course that basically says that there are some animals(E.g. earth worms, shrimp and starfish) that do not have brains per say but they have clusters of ganglia that make a plexus or plexi (the plural form of plexus) and these act as nerve centers.
-Actually, earthworms and shrimp (as do all arthropods) have central brains. However, they also possess a chain of ganglia along their nerve cords. Echinoderms (such as starfish) do not have true brains, instead having nerve nets.
Coral.
No, of course not, like humans, animals have a percentage of their brain, no matter how small, that they don't use.
A jellyfish & a starfish A Jellyfish has no brain & no heart A starfish has no brain & no blood
When going from lower to higher animals a larger proportion of the brain is devoted to the cerebrum. The brain stem is made up of medulla and the cerebellum.
Well they say that animals are smarter than humans... so wht doesnt a brain do for a rabbit? here's a question....... wht the heck does a brain do for you?
Mice that are trying to Take over the world
no animals have a brain even dinosaurs do
brain brain brain
Both animals and humans do have reward centers in the brain. Both humans and animals feel happy or pleasure when the reward centers of the brain are stimulated.
no
cockroaches
One different is the human have a larger neocortex than a animals.Also,the convolutions resulting in gryi and sulci in the human brain is sometimes not seen in a lower animals or is less complex.
My brain lets me speak and form sentences.
No, of course not, like humans, animals have a percentage of their brain, no matter how small, that they don't use.
Some animals, such as those in the genus Hydra, don't actually have a brain per se, making it difficult to answer.
No, not every animal needs a brain. A jellyfish does not have a brain, it barely has any organs.
Microscopic animals
No.