Question

What is the respiratory organ of fish?

Answer 1

Fish:

1. Fishes are cold blooded vertebrates belonging to phylum chordata.
2. Fish live in an aquatic habitat.
3. The respiratory organ of fish is the gills.

Gills:

1. Gills help for breathing in water.
2. Gills in fish can extract dissolved oxygen from water and excrete carbon dioxide.
3. Gills are located on the side of head and have many small blood vessels.

Thus, the respiratory organ of fish is gills.