Amphibia examples include which of the following?

• A. Frogs, Toads, Salamanders
• B. Reptiles
• C. Birds
• D. Mammals

Answer: (A)

Amphibians are a group of animals that typically begin life in water and later may live on land. Frogs, toads, and salamanders are the classic examples of this group. They usually hatch from eggs in watery environments as free-swimming larvae with gills and tails, then undergo metamorphosis into adults with legs and lungs. Their moist, permeable skin is a hallmark that helps with respiration and hydration, and they generally lack the scales seen in reptiles. Reptiles, birds, and mammals represent other vertebrate classes with different traits: reptiles have dry, scaly skin and eggs with leathery or hard shells; birds have feathers and adapted bones for flight; mammals have hair and produce milk for their young. Therefore, the examples listed are indeed amphibians.