Question

Organs responsible for breathing in humans and fishes respectively are

• A. Lungs in both
• B. Gills and lungs
• C. Gills in both
• D. Lungs and gills

Answer 1

The correct option is D Lungs and gills

Humans have lungs to carry out respiration. Lungs are ingrowths of the body wall and connected to the outside by a series of tubes and small openings.

Gills are convoluted outgrowths containing blood vessels covered by a thin epithelial layer. They increase the surface area for gas exchange in fishes.

So the correct answer is 'Lungs and Gills'.