NEET PG DENTAL EXAM

Detailed explanation-1: -Tadpoles breathe through the gills by moving their throat through regular rhythmic movements, known as pulsing. They can also breathe through lungs. When they metamorphose into frogs, they eventually lose their gills and start breathing through the lungs or through the skin.

Detailed explanation-2: -Tadpoles have gills, but they don’t usually provide enough oxygen for them to survive, so most tadpoles also have lungs and breathe air as a back-up. But during the earliest period of their lives, tadpoles are too small to break through the water’s surface to breathe.

Detailed explanation-3: -When the tadpole reaches the froglet stage, it is almost a full adult. At this point, the tadpole’s gills have disappeared, and its lungs have enlarged. This means it is ready to leave the water and live on land. Once its tail disappears, it will become an adult frog.