What is the site of gaseous exchange inan insect?
Ininsects, gaseous exchange occurs through a network of tubescollectively known as the tracheal system. The small openings on thesides of an insect’s body are known as spiracles. Oxygen-richair enters through the spiracles. The spiracles are connected to thenetwork of tubes. From the spiracles, oxygen enters the tracheae.From here, oxygen diffuses into the cells of the body.
Themovement of carbon dioxide follows the reverse path. The CO2from the cells of the body first enters the tracheae and then leavesthe body through the spiracles.