Question

How do aquatic animals respire?

• A. They come to surface of the water everytime they respire.
• B. They take in dissolved carbon dioxide for respiration.
• C. They use water for respiration.
• D. They taken in dissolved oxygen for respiration.

Answer 1

The correct option is D They taken in dissolved oxygen for respiration.

Air is present at every place where there is life. In rivers, seas, oceans, and other water bodies, air is present. Though air is not available in the same manner as it is on the surface of the earth, but it is present in dissolved form. Aquatic animals use their gills for extracting oxygen in water. Some aquatic animals may even use their skin for extracting oxygen from water.