Nerve cord in earthworm is

The nerve chord in earthworm originates from

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

Notochord in earthworm is____and nerve cord is____.

Notochord in earthworm is____and nerve cord is____.

Which of the following structure is not a part of nerve ring in earthworm ?

The double nerve cord in cockroach is present on the