The nerve chord in earthworm originates from

Nerve cord in earthworm is

Nerve cord in earthworm is

Nerve cord in earthworm is

Nerve cord in earthworm is

The nerve cord of earthworm is

The nerve cord of earthworm bifurcates anteriorly in "A__ segments, encircles pharynx "B___, and joins cerebral ganglia "C___" to form a nerve ring .Identify "A,B&C

Two ganglionated solid ventral nerve cords of cockroch originate from

Two ganglionated solid ventral nerve cords of cockroch originate from

The second cranial nerve in human originates from or The second cranial nerve of frog is distributed in