Following are the two statements regarding the origin of life.
$(A)$ The earliest organisms that appeared on the earth were non-green 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?

  • A
    Both $(A)$ and $(B)$ are correct.
  • B
    Both $(A)$ and $(B)$ are false.
  • C
    $(A)$ is correct but $(B)$ is false.
  • D
    $(B)$ is correct but $(A)$ is false.

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The formation of a new species is associated with which trait?

$A$ : During evolution,the early time period was without an ozone layer.
$R$ : The ozone layer absorbs $U.V.$ rays to some extent.

What contributions have biologists and other scientists made to understand the origin of life?

Which of the following is the correct sequence of events in the origin of life?
$I.$ Formation of protobionts
$II.$ Synthesis of organic monomers
$III.$ Synthesis of organic polymers
$IV.$ Formation of $DNA$-based genetic systems

Which of the following were present in the prebiotic soup?

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