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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.
What else can I help you with?
What are the brainless animals?
A jellyfish & a starfish A Jellyfish has no brain & no heart A starfish has no brain & no blood
Do animals use 100 percent of their brain capacity?
No, the myth that animals only use a small percentage of their brain capacity is false. Different parts of an animal's brain are active during various tasks, and they utilize their entire brain for survival, movement, and cognitive functions.
What is the larger proportion of the brain devoted to as we move from lower to higher animals?
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.
What big animals have tiny brains?
Some examples of big animals with relatively small brains are elephants, blue whales, and sperm whales. These animals have massive bodies, but their brain size in proportion to their body size is smaller compared to other animals.
What animals are Pinky and the Brain?
Mice that are trying to Take over the world
Are there any animals that do not have a brain?
no animals have a brain even dinosaurs do
Were do you find amoeba cell in animals body?
brain brain brain
Do both animals and humans have reward centers in the 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.
Which animals have magnetite in their brain?
cockroaches
Can animals spread brain cancer?
no
What does your brain let you do and that animals connot do?
My brain lets me speak and form sentences.
Who are the animals with the smaller brain in the world?
Some animals, such as those in the genus Hydra, don't actually have a brain per se, making it difficult to answer.
Do all animals require a brain?
No, not every animal needs a brain. A jellyfish does not have a brain, it barely has any organs.
What does the brain coral eat?
Microscopic animals
Do all animals have a brain the same size?
No.
What are the brainless animals?
A jellyfish & a starfish A Jellyfish has no brain & no heart A starfish has no brain & no blood
How do animals with larger brain differ with smaller brains?
Bigger brain = smarter Smaller brain = dumber Monkey has big brain, can use tools to get food etc. Bird has peanut sized brain, eats already dead animals instead of finding it's own.
