Question

Select the correct pair of the age of the earth and life that has existed on the earth.

• A. 3.5 billion, 2.5 billion
• B. 3.5 billion, 1.5 billion
• C. 15 billion, 3.5 billion
• D. 4.5 billion, 600 million
• E. 4.5 billion, 3.5 billion

Answer 1

The correct option is E 4.5 billion, 3.5 billion

The solar system and hence, Earth was born around 4.5 billion years ago by collapsing of gaseous cloud called solar nebula under influence of its own force of gravity. The first life form, bacteria like a prokaryotic cell, originated from protocell in an Archaeozoic era (3.5 billion yrs ago, the era of the dawn of life). Thus, the correct answer is option E.