Evolutionary sequence among organisms — UPSC Prelims PYQ 2009

With reference to the evolution of living organisms, which one of the following sequences is correct?

1. Octopus – Dolphin – Shark
2. Pangolin – Tortoise – Hawk
3. Salamander – Python – Kangaroo
4. Frog – Crab – Prawn

Explanation

Option (c) is correct

• Evolutionary sequence broadly follows: amphibians → reptiles → mammals. Salamander is an amphibian, Python is a reptile, and Kangaroo is a mammal.

Answer: (c) Salamander – Python – Kangaroo