Question

1. during what part of the life cycle can an amphibian have both gills and lungs?

○ metamorphic
○ larvae
○ egg
○ adult

Explanation:

Amphibian larvae (like tadpoles) only have gills, eggs are the initial undeveloped stage, and adults primarily use lungs (and skin) for respiration. The metamorphic stage is the transitional phase where gills are gradually replaced, and lungs begin to develop, so the organism has both structures temporarily during this period.

Answer:

metamorphic