The animal that does not have a brain is the jellyfish.
Jellyfish are fascinating aquatic creatures that lack a centralized brain, heart, and lungs.
Jellyfish Nervous System
Instead of a brain, jellyfish possess a network of nerve cells spread throughout their body. This mesh of nerves allows them to sense their surroundings, particularly through their tentacles.
- No Brain: Jellyfish do not have a brain as we know it in other animals.
- Nerve Net: They have a simple nervous system comprised of a nerve net.
- Touch Sensitivity: This nerve net makes them very sensitive to touch.
Although jellyfish don't have a brain, they can still perceive and react to their environment through this dispersed nerve network.
Here's a summary table:
Animal | Brain | Nervous System |
---|---|---|
Jellyfish | No | Nerve Net |