Question

What is common between earthworm and cockroach?

• A. Nephridia
• B. Solid ventral nerve cord
• C. Cuticle
• D. Malpighian tubules

Answer 1

The correct option is B Solid ventral nerve cord

A. Nephridia help in osmoregulation and excretion in the earthworm.

B. Both cockroach and earthworm have neural system consist of paired ganglia connected by lateral nerves to a double ventral nerve cord.

C. The body of an earthworm is covered externally by a thin layer of non-cellular cuticle.

D. Excretion takes place through malpighian tubules in the cockroach.

So, the correct answer is "Solid ventral nerve cord".