Zoology-Origin of Life
NEET Zoology Origin of Life Assertion Reason Question
Type: Assertion Reason-assertion-Medium-Class 12
Assertion (A): The first cellular form of life possibly originated around 2000 million years ago. | Reason (R): The early atmosphere of Earth was rich in oxygen, facilitating the development of complex life forms.
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 C
Detailed Explanation
The assertion is true as the first cellular life is believed to have originated around 2000 million years ago. However, the reason is false because the early atmosphere lacked oxygen and was composed mainly of water vapour, methane, carbon dioxide, and ammonia.
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