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?
- A
$N H_{3}$
- B
$H _{2}$
- C
$O _{2}$
- D
$CH _{2}$
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About how long ago was the earth formed
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Following are the two statements regarding the origin of life.
$(A)$ The earliest organisms that appeared on the earth were nongreen and presumably anaerobes.
$(B)$ The first autotrophic organisms were the chemoautotrophs that never released oxygen.Of the above statements which one of the following options is correct?
Following are the two statements regarding the origin of life.
$(A)$ The earliest organisms that appeared on the earth were nongreen and presumably anaerobes.
$(B)$ The first autotrophic organisms were the chemoautotrophs that never released oxygen.Of the above statements which one of the following options is correct?
- [NEET 2016]
Which is responsible for origin of life
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Definitions / Explanation : Hominid features & Evolutionary biology.
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Who first conducted experiment on evolution to prove biochemical origin of life?
Who first conducted experiment on evolution to prove biochemical origin of life?