AP BIOLOGY

Detailed explanation-1: -A frog is a good example, starting out as a tadpole with gills to breathe underwater and a tail to swim with.

Detailed explanation-2: -The free-swimming larval stage of tunicates, having gill slits and a notochord. The definition of a tadpole is the young stage of an amphibian, it lives in water, has a tail and breaths through gills. An example of a tadpole is the stage a toad is in before it gets legs and lungs for breathing outside of the water.

Detailed explanation-3: -Tadpoles have gills, a tail fin, and no arms or legs. They are amphibians, but they’re not amphibious. They can’t survive on land until they undergo metamorphosis. The tadpole’s small circular mouth is well-suited to munch on aquatic plant material and dead insects.