Answer the following:

Explain respiration in cockroach.

● Respiration in a cockroach is carried out with the help of a system called tracheal system.

● The tracheal system includes Trachea, Tracheoles, and Spiracles. Spiracles are small openings present on the lateral side of the body.

● There are ten pairs of respiratory spiracles.

● Two pairs are present in the thoracic region and eight pairs are in the abdominal region.

● Air from outside enters through spiracles into the body. Tubular trachea and tracheoles carry oxygen from the diffused air to all parts of the body.

● Cells take in oxygen by diffusion and give out carbon dioxide to the tracheoles.

● The blood of a cockroach is hemolymph by which gaseous exchange occurs between the cells.

● Carbon dioxide is diffused out of the body through spiracles.