Zoology-(general)
NEET Zoology (general) MCQ Question
Type: MCQ-numerical-Easy-Class 12
If the first non-cellular forms of life originated 3 billion years ago and the earth was formed 4.5 billion years ago, how many years elapsed between the formation of earth and the origin of these non-cellular life forms?
A
5 billion years
B
5 billion years
C
4 billion years
D
0.5 billion years
Correct Answer
Option A
Detailed Explanation
The earth was formed 4.5 billion years ago, and non-cellular life forms originated 3 billion years ago. The difference is 4.5 billion - 3 billion = 1.5 billion years.
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