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| 1. |
Explain breathing of fish and also show the diagram |
| Answer» \tThe fish has special organs for breathing called ‘gills’. The fish has gills on both the sides of its head.\tThe fish lives in water and this water contains dissolves oxygen in it. The fish breathes by taking in water through its mouth and sending it over the gills.\tWhen water passes over gills, the gills extract dissolved oxygen from this water. The water then goes out through the gill slits.\tThe extracted oxygen is absorbed by the blood and carried to all the parts of the fish. The carbon dioxide produced by the respiration is brought back by the blood into the gills for expelling into the surrounding water. | |