The key event in the transition of the amphibians from water to land is the ________
-
replacement of the gills with lungs
- possession of webbed limbs
- limbs
- possession of tympanic membrane
The correct answer is: A
Explanation
Amphibians display some interesting and changing characteristics as they metamorphose through various forms on their way to adulthood. The frog, for instance, begins life underwater as a larva with gills and becomes and air-breather with lungs as an adult.&therefore4; in case of draught, frog can amphibians can use lungs to breathe on land
There is an explanation video available .