The Living World Question 9
9. First life on earth was
(a) Cyanobacteria
(b) Chemoheterotrophs
(c) Autotrophs
(d) Photoautotrophs
Show Answer
Answer : b
Hints & Solutions
(b) First life on earth was chemoheterotroph. These were formed in the environment of sea having abundant organic molecules. They absorbed the organic materials for the sake of nutrtion and hence were chemoheterotrophs.