Zoology - Structural Organisation in Animals Question with Solution | TestHub

Cockroaches consist of nine ganglia. Out of these three are present in the thorax and six are in the abdomen. Cockroaches consist of compound eyes and these contain small units known as ommatidia. which is around 2000 in number. Respiratory system consists of ten pairs of spiracles. Excretion is done with the help of Fat bodies, nephrocytes and uricose glands.