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Assertion: The earliest organisms that appeared on the earth were non-green and presumably anaerobes.
Reason: The first autotrophic organisms were the chemo-autotrophs that never released oxygen.
  • a)
    Both Assertion and Reason are true and the Reason is the correct explanation of the Assertion
  • b)
    Assertion is true statement but Reason is false
  • c)
    Both Assertion and Reason are false statements
  • d)
    Both Assertion and Reason are true and the Reason is not the correct explanation of the Assertion
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
Assertion: The earliest organisms that appeared on the earth were non-...
The earliest organisms that appeared on the earth were non-green and presumably anaerobes. The first autotrophic organisms were the chemo-autotrophs that never released oxygen. Both the statements are correct but reason does not explain the assertion.
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Community Answer
Assertion: The earliest organisms that appeared on the earth were non-...
I think it is better explained in this video from Ted Ed-
https://m.youtube.com/watch?v=dO2xx-aeZ4w&t=39s

As it is said first unicellular life forms
produce energy by scavenging molecules.
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Assertion: The earliest organisms that appeared on the earth were non-green and presumably anaerobes.Reason: The first autotrophic organisms were the chemo-autotrophs that never released oxygen.a)Both Assertion and Reason are true and the Reason is the correct explanation of the Assertionb)Assertion is true statement but Reason is falsec)Both Assertion and Reason are false statementsd)Both Assertion and Reason are true and the Reason is not the correct explanation of the AssertionCorrect answer is option 'D'. Can you explain this answer?
Question Description
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