CBSE Class 10 Answered

Fragmentation is a method of asexual reproduction in organisms. Click here to learn more about it.

Respiration in fishes:

·         In aquatic animals such as fish respiration takes place through special respiratory organs called gills.

·         Gills are present on both the sides of the head of fish. The gills are covered by gill covers also called operculum. 

·         The gills of fish are very efficient as they can extract about 80% oxygen dissolved in water.

·         The gills have an important role in maintaining the right balance of salts in the body.