In frogs, which stage is characterized by gills?

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Explore the Academic Decathlon Science Test. Practice with quizzes and in-depth explanations to boost your exam readiness and improve your scores.

Multiple Choice

In frogs, which stage is characterized by gills?

Explanation:
Gills appear during the frog’s aquatic larval stage, when the animal is a tadpole. Tadpoles hatch from eggs in water and rely on gills to exchange gases as they swim with a tail. As they undergo metamorphosis, they develop legs and lungs and lose their gills, becoming adults. So the stage characterized by gills is the tadpole stage.

Gills appear during the frog’s aquatic larval stage, when the animal is a tadpole. Tadpoles hatch from eggs in water and rely on gills to exchange gases as they swim with a tail. As they undergo metamorphosis, they develop legs and lungs and lose their gills, becoming adults. So the stage characterized by gills is the tadpole stage.

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