The Living World Ques 15
15. First life on earth was simple single-celled organisms
(a) Cyanobacteria
(b) Chemoheterotrophs
(c) Autotrophs are organisms that produce their own food through processes like photosynthesis or chemosynthesis.
(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 nutrition and hence were chemoheterotrophs.
BETA
