Question

In earthworm,nerve cord runs posteriorly in (1)Mid-dorsal line (2)Mid-ventral line (3)Either dorsal or ventral side (4)Pharyngeal region only

Answer 1

Answer:

Mid-dorsal side of the ventral nerve cord.

Explanation:

An upper pair of nerve cords leaves these ganglia and runs posteriorly to the visceroparietal, or visceral, ganglia. The visceral ganglia supply the mantle, adductor muscles (which close the shell), and internal organs. A second pair of nerve cords travels ventrally to the pedal ganglia.There is also three giant axons, one medial giant axon (MGA) and two lateral giant axons (LGAs) on the mid-dorsal side of the ventral nerve cord.