Question
Following are the two statements regarding the origin of life.
- The earliest organisms that appeared on the earth were non-green and presumably an aerobes.
- The first autotrophic organisms were the chemoautotrophs that never released oxygen of the above statements which on of the following options is correct?
II is correct, but I is false
Both I and II are correct
Both I and II are false
I is correct, but II is false
Solution
B.
Both I and II are correct
The earliest organisms that appeared on earth were anaerobic chemoautotrophs. Chemoautotrophs were the first autotrophic organisms. They were unable to perform photolysis of water and never released oxygen, e.g. sulphur bacteria
