Question

Life is believed to have originated in

• A. The primordial atmosphere of the earth
• B. The freshwaters of primitive earth
• C. The oceans of primitive earth
• D. The primordial lithosphere of the earth

Answer 1

The correct option is C The oceans of primitive earth

The early atmosphere contained no oxygen and could not support most of the life forms. In addition to the molten lava flowing into the ocean, some of the chemicals viz., hydrogen, helium, carbon dioxide, nitrogen etc. were supposedly washed down by the rains into the ocean. These chemicals gradually converted to simple organic molecules that eventually joined together into complex organic molecules like DNA and RNA.