Q. What does the word amphibian means?
Answer: Two lives
Notes: The word amphibian means two-lives. Amphibians spend their lives in the water and on land. All amphibians begin their life in water with gills and tails; as they grow, they develop lungs and legs for their life on land. Members of this animal class are frogs, toads, etc. They are characterized by external fertilization that takes place in water.