As a subject matter expert in the field of biology with a specialization in zoology, I can provide you with an informed answer to your question about the nervous systems of worms.

Worms, which are part of the phylum Annelida, do have a nervous system. However, it's important to clarify that the structure and complexity of a worm's nervous system can vary significantly depending on the species. For instance, earthworms have a relatively simple nervous system compared to the more complex nervous systems found in some other types of worms.

Earthworms, which are members of the class Oligochaeta, have a brain-like structure called a ganglion at the anterior (front) end of their body. This ganglion is responsible for processing sensory information and coordinating motor responses. In addition to the brain-like ganglion, earthworms also have a series of connected ganglia that run down the length of their body, forming a nervous cord. This cord is similar to a spinal cord in vertebrates and helps in transmitting signals between the brain and the rest of the body.

It's worth noting that not all worms have a brain in the traditional sense. Some worms, like the roundworms (Nematoda), have a more primitive nervous system without a distinct brain structure. Instead, they have a series of nerve cords and ganglia that serve similar functions.

In summary, while worms do possess a form of a nervous system, the term "brain" is used loosely and the complexity of this system can differ from one type of worm to another.

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Thinking and feeling: Worms have a brain that connects with nerves from their skin and muscles. Their nerves can detect light, vibrations, and even some tastes, and the muscles of their bodies make movements in response. ... Eating: Worms do not have teeth, but their mouths are muscular and strong.read more >>