Which of the following structures represent the nervous system of an earthworm?
A. Ganglia
B. Notochord
C. Vertebral column
D. Brain
Answer:A
Which of the following structures represent the nervous system of an earthworm?
A. Ganglia B. Notochord C. Vertebral column D. Brain
Explanation: Nervous system of the earthworm is represented by ganglia arranged segment-wise on the ventral paired nerve cord. The nerve cord on the anterior region bifurcates, laterally encircling the pharynx and joins the cerebral ganglia dorsally to form a nerve ring.