Zoology - Structural Organisation in Animals Question with Solution | TestHub

The blood (haemolymph) is composed of colourless plasma and haemocytes.

Heart of cockroach consists of an elongated muscular tube lying along mid-ventral line of thorax and abdomen.

The hindgut is broader than midgut and differentiated into ileum, colon and rectum.

Both gizzard and mandible help in grinding the food particles.