Question

How does respiration take place through gills in fishes?

Answer 1

Respiration:

• Respiration is a process in which living creatures produce energy through the inhalation of oxygen and the exhalation of carbon dioxide produced by the oxidation of complex organic compounds.

Respiration in Fish:

• Water dissolves oxygen and carbon dioxide, and most fishes exchange dissolved oxygen and carbon dioxide through their gills.
• Water constantly inhaled through the mouth travels backward between the gill bars and over the gill filaments, where gases are exchanged.
• The blood capillaries present in the gill filaments are closer to the gill's surface, allowing them to absorb oxygen from the water and expel excess carbon dioxide.