First organism to evolve on the earth were

First organisms to evolve on the earth were :

First organisms to evolve on the earth were :

First organism which was evolved on the earth

The first organisms to appear on earth were more like plants because

The first organisms to appear on earth were more like plants because

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.