Question
Biology Question on evolution
1st life on earth was
A
cyanobacteria
B
chemohetrotrophs
C
autotrophs
D
photoautotrophs.
Answer
chemohetrotrophs
Explanation
Solution
First life form on earth was chemoheterotrophs. These organisms obtain their energy by fermenting the complex organic substances that are available in the sea. They are mainly anaerobic. They have a major role in nutrient cycling and energy transfer. They live in a diversity of areas like soil and water and even gastrointestinal tracts of animals.