Zoology-Origin of Life
NEET Zoology Origin of Life Assertion Reason Question
Type: Assertion Reason-assertion-Easy-Class 12
Assertion (A): The first cellular forms of life originated in a water environment. | Reason (R): Early Earth had an atmosphere devoid of oxygen, primarily consisting of water vapour, methane, carbon dioxide, and ammonia.
A
Both A and R are true, and R is the correct explanation of A.
B
Both A and R are true, but R is not the correct explanation of A.
C
A is true but R is false.
D
A is false.
Correct Answer
Option A
Detailed Explanation
The NCERT context states that the first cellular forms of life originated in a water environment, and this was due to the early Earth's atmosphere, which lacked oxygen and was composed of water vapour, methane, carbon dioxide, and ammonia.
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