The key event in the transition of the amphibians from water to land is the ________
A.
replacement of the gills with lungs
B.
possession of webbed limbs
C.
limbs
D.
possession of tympanic membrane
Correct Answer: Option 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
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