Which part of alimentary canal of cockroach has an outer layer of thick circular muscles and inner cuticle forming six highly chitinous plate called teeth (a) Gizzard (b) Crop (d) Proventriculus (d) Both (a) and (c).
Option A. The gizzard is the closing a part of the foregut. It has an outer layer of thick round muscle tissues and a thick internal cuticle forming six notably chitinous plates referred to as teeth. The gizzard enables in grinding the meals particles.
