The sequence of the one-way gaseous exchange mechanism in a fish is?
Answer Details
The correct sequence of the one-way gaseous exchange mechanism in a fish is:
- Mouth --> Gills --> Operculum
Fish use their mouths to take in oxygen-rich water, which then passes through the gills, where the oxygen is extracted and carbon dioxide is released. The oxygen then diffuses into the bloodstream through the thin walls of the capillaries in the gills, while carbon dioxide diffuses out of the bloodstream and into the water. Finally, the water exits the fish's body through the operculum, which is a bony plate that covers the gills and helps to regulate water flow over them.