NEET BIOLOGY

Detailed explanation-1: -Similarly, frogs when they are young (tadpoles) they breathe through gills, but as they become adult they develop lungs for breathing and become land-dwelling animals.

Detailed explanation-2: -Amphibians Frogs, Toads and Newts.

Detailed explanation-3: -How do amphibians breathe? Most amphibians breathe through lungs and their skin. Their skin has to stay wet in order for them to absorb oxygen so they secrete mucous to keep their skin moist (If they get too dry, they cannot breathe and will die).

Detailed explanation-4: -Lungfish have a unique respiratory system, having both gills and a lung. It is the only type of fish to have both organs, and there are only six known species around the world.

Detailed explanation-5: -As amphibian larvae develop, the gills (and in frogs, the tail fin) degenerate, paired lungs develop, and the metamorphosing larvae begin making excursions to the water surface to take air breaths.