AIIMS 2018 Zoology Mesozoic Era MCQ Question

The geological periods are sequenced as follows: the Permian (1), followed by the Triassic (2), and then the Jurassic (3), making option A (1-2-3) the correct order. This sequence reflects the progression of the Paleozoic Era into the Mesozoic Era, where the Permian marks the end of the Paleozoic, the Triassic is the earliest period of the Mesozoic, and the Jurassic follows. Options B, C, and D incorrectly rearrange these periods, disrupting the established chronological order of Earth's geological history. Understanding these periods is crucial for studying the evolution of life and the Earth's geological processes over time.