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Question
Which was absent in the atmosphere at the time of origin of life?
Which was absent in the atmosphere at the time of origin of life?
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Solution
The correct option is D O2
Conditions on primitive earth
- Primitive Earth had large number of atoms like hydrogen, carbon, oxygen, nitrogen, phosphorus etc
- These atoms combined to form simple molecules.
- Hydrogen atoms were most abundant and it combined with oxygen and nitrogen forming water and ammonia respectively.
- The atmosphere was reducing in nature. Hence oxygen was absent at the time of origin of life.
Final answer
(c) O2
Conditions on primitive earth
- Primitive Earth had large number of atoms like hydrogen, carbon, oxygen, nitrogen, phosphorus etc
- These atoms combined to form simple molecules.
- Hydrogen atoms were most abundant and it combined with oxygen and nitrogen forming water and ammonia respectively.
- The atmosphere was reducing in nature. Hence oxygen was absent at the time of origin of life.
(c) O2
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