gs1medium
From the point of view of evolution of living organisms, which one of the following is the correct sequence of evolution?
- A.Otter – Tortoise – Shark
- B.Shark – Tortoise – Otter
- C.Tortoise – Shark – Otter
- D.Shark – Otter – Tortoise
▶ Answer & Explanation
Correct answer: C. Tortoise – Shark – Otter
The evolutionary timeline places sharks as early vertebrates, appearing in the fossil record hundreds of millions of years ago. Tortoises, which are reptiles, evolved much later, developing from ancestral reptiles that adapted to land. Otters, being mammals, represent a more recent evolutionary development, diversifying from earlier mammal groups after the age of reptiles.
Source: UPSC gs1 2010