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State PCS PYQPrelims 2018

UPPCS · Question 112

Consider the following events: 1. First reptiles 2. First insects 3. Shelled animals 4. First mammals Arrange the above events in chronological order of their origin on the earth and select the correct answer from the codes given below:

  1. 2, 1, 3, 4
  2. 2, 3, 1, 4
  3. 3, 2, 1, 4
  4. 2, 4, 1, 3
Show answer & explanation

Answer: (C) 3, 2, 1, 4

Explanation

Shelled animals (Cambrian) → first insects (Devonian) → first reptiles (Carboniferous) → first mammals (Triassic). So 3, 2, 1, 4.