ANATOMY

Detailed explanation-1: -The given statement is false. This is because animals such as fishes use gills to obtain oxygen from the water. Moreover, some animals such as earthworms can even breathe through their skin. Thus, all animals do not breathe through lungs.

Detailed explanation-2: -With most-but not all-fish, the gills do the same thing. Fish take water into their mouth, passing the gills just behind its head on each side. Dissolved oxygen is absorbed from-and carbon dioxide released to-the water, which is then dispelled.

Detailed explanation-3: -These gill filaments absorb oxygen from the water and move it into the bloodstream. The fish’s heart pumps the blood to distribute the oxygen throughout the body. At the same time, waste carbon dioxide in the blood passes out through the gills back into the water.

Detailed explanation-4: -Gills are branching organs located on the side of fish heads that have many, many small blood vessels called capillaries. As the fish opens its mouth, water runs over the gills, and blood in the capillaries picks up oxygen that’s dissolved in the water.

Detailed explanation-5: -Fish use gills to breath, and gills can only bring in oxygen when moist, because the chemistry that allows blood to carry oxygen happens in water. Out of water, a fish’s gills dry out, and then the fish asphyxiates.