Some organisms, such as earthworms and squid, have clusters of neurons called
A) the spinal cord.
B) the central nervous system.
C) the peripheral nervous system.
D) ganglia.
E) None of the above

Question

Quizplus · Accepted Answer

Ganglia are clusters of neurons found in some invertebrates, such as earthworms and squid. The spinal cord, central nervous system, and peripheral nervous system are structures found in vertebrates.

Some Organisms, Such as Earthworms and Squid, Have Clusters of Neurons