Question

Nerve cord of Cockroach is

• A. Dorsal and single
• B. Dorsal and double
• C. Ventral and single
• D. Ventral and double

Answer 1

Answer: (D)

Ventral and double

In cockroach, ventral nerve cord is present on ventral side of the alimentary canal.

• It consists of two longitudinal nerves which are solid. Hence it is described as a double solid ventral nerve cord.

• The nerve cord extends in between sub- oesophageal ganglia and the last abdominal ganglia present in the 7th segment.

So the correct answer is 'Ventral and double'.