Zoology-Origin of Life

NEET Zoology Origin of Life MCQ Question

Type: MCQ-diagram based-Hard-Class 12

Imagine a diagram showing the early Earth's atmosphere as described in the NCERT text. Which of the following gases was NOT a major component of this atmosphere?

Question diagram
A

Oxygen

B

Methane

C

Carbon dioxide

D

Ammonia

Correct Answer

Option A

Detailed Explanation

According to the NCERT text, the early Earth's atmosphere was composed of water vapour, methane, carbon dioxide, and ammonia, but not oxygen.

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