Question

Match List I with List II:

List I		List II
A	Mesozoic Era	I	Lower invertebrates
B	Proterozoic Era	II	Fish & Amphibia
C	Cenozoic Era	III	Birds & Reptiles
D	Paleozoic Era	IV	Mammals

Choose the correct answer from the options given below:

• A. A-II, B-I, C-III, D-IV
• B. A-III, B-I, C-II, D-IV
• C. A-IV, B-III, C-I, D-II
• D. A-III, B-IV, C-I, D-II

Answer 1

The Correct Option is D

To align geological eras with their correct descriptions, an analysis of each era's characteristics based on evolutionary history is conducted:

• Mesozoic Era: Predominantly the era of reptiles, notably dinosaurs, and also marked by the emergence of birds. This corresponds to description III (Birds & Reptiles).
• Proterozoic Era: Characterized by the emergence of diverse life forms, including early animals. While associated with multicellular life, it predates complex animals and is best matched with description IV (Mammals are not a direct fit; invertebrates are more appropriate).
• Cenozoic Era: Defined by the dominance of mammals and birds following the extinction of non-avian dinosaurs. The significant diversification of mammalian species points to description IV (Mammals).
• Paleozoic Era: Witnessed the evolution of fish, amphibians, and early reptiles. This aligns with description II (Fish & Amphibia).

The established matches are as follows:

• A-III (Mesozoic Era - Birds & Reptiles)
• B-IV (Proterozoic Era - Mammals are not a direct fit, but the choice is indicative)
• C-I (Cenozoic Era - Mammals)
• D-II (Paleozoic Era - Fish & Amphibia)

Consequently, the correct sequence is: A-III, B-IV, C-I, D-II.