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Following are the two statements regarding the origin of life I. The earliest organisms that appeared on the earth were non-green and presumably anaerobes. II. The first autotrophic organisms were the chemoautotrophs that never released oxygen. Of the above statements which one of the following options is correct?
A
II is correct but I is false.
B
Both I and II are correct.
C
Both I and II are false.
D
I is correct but II is false.
Explanation
Early life was anaerobic; the first autotrophs were chemoautotrophs.
Detailed Solution
Chemoautotrophs were the earliest autotrophic microorganisms on the earth; they did not carry out photolysis, so they did not release oxygen. Hence both statements are correct.