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Evolution question

2016 · Q79
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Evolution question

2016 · Q79

NEETBiologyEvolutionMCQ+4 / −1
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 ?
  1. A
    Both (a) and (b) are false
  2. B
    Both (a) and (b) are correct
  3. C
    (b) is correct but (a) is false
  4. D
    (a) is correct but (b) is false
View written solutionFree

Correct answer: B

Both statements are correct because primitive atmosphere was reducing and chlorophyll appeared later on. Chemoautotrophs were the first autotrophic organisms unable to perform photolysis of water and never released oxygen.

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