First photosynthetic organisms to appear...

First photosynthetic organisms to appear on earth were

Bacteria

Green algae

Cyanobacteria

Bryophytes

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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 anaerobic The first autotrophic organisms were the chemoautotrophs that never released oxygen. Of the above statements which one of following options is correct

Assertion: The earliest organisms that appeared on the earth were non-green and presumably anaerobes. Reason: The first autotrophic organisms were the chemoautotrophs that never released oxygen.

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 relesed oxygen. Of the above statements which one of the following options is correct ?

Following are the two statements regarding the origin of life I. The earliest organisms that appeared on the earth were nongreen 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?

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A: The first photosynthetic organisms which show oxygenic photosynthesis were cyanobacteria. R: Photosynthesis by Eubacteria is Anoxygenic.

First photosynthetic bacteria might have appeared around

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