The correct sequence of organs in the alimentary canal of cockroach starting from mouth is :Pharynx → Oesophagus → Crop → Gizzard → Ileum → Colon → RectumThe alimentary canal of a cockroach is divided into foregut, midgut and hindgut. The oesophagus opens into the crop, which is used for storing food. The crop opens into a gizzard or proventriculus. The gizzard is used for grinding and it is followed by the mesenteron or midgut. Ileum, colon and rectum are the parts of the hindgut.