In which of the following parts of organisms, the process of gaseous exchange during respiration does not take place?

Gaseous exchange is the biological process where oxygen is absorbed and carbon dioxide is released. In earthworms, this occurs through their moist skin (cutaneous respiration). In Pila (apple snail), gills (ctenidia) facilitate gaseous exchange during aquatic respiration. In the human respiratory system, the alveoli are the primary sites of gaseous exchange, featuring thin walls and a rich supply of blood capillaries to allow diffusion.

The bronchi are part of the conducting zone of the human respiratory system. Their main function is to transport, warm, and filter air as it moves toward the lungs. Because their walls are relatively thick and lack the specialized structure of the respiratory membrane, gaseous exchange does not take place in the bronchi.