With reference to the evolution of living organisms, which one of the following sequences is correct?
✓ Correct answer: c) Salamander-Python-Kangaroo
ExplanationSalamander-Python-Kangaroo sequence follows a correct evolutionary progression:Salamanders are amphibians to the class Amphibia.Amphibians evolved from fish and are characterized by their ability to live both in water (as larvae) and on land (as adults).Pythons are reptiles in the class Reptilia which have evolved from amphibians.Reptiles are vertebrates with dry skin, and they lay eggs on land (as opposed to amphibians, which generally need water for reproduction).Kangaroos are mammals, specifically marsupials in the class Mammalia.Mammals evolved from reptiles.Kangaroos are one of the few mammals that give birth to underdeveloped offspring, which then continue to develop in a pouch.UPSC GS Paper-I PYQs 620 412
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