During which life stage do both newts and frogs have gills?

During which life stage do both newts and frogs have gills?

• A. Egg stage
• B. Adult stage
• C. Larval stage
• D. Metamorphosis stage

Answer: (C)

Gills appear during the aquatic juvenile form of amphibians. In frogs and newts, life starts in water as eggs that hatch into larvae (tadpoles for frogs, larval newts) that breathe with gills. As they grow, they undergo metamorphosis into adults with lungs, and the gills are lost. So, both have gills during the larval stage.