Question

choose the correct option for the following question :-
All life on earth derives its energy, directly or indirectly from the sun except
1.chemosynthetic bacteria
2.pathogenic bacteria
3.Autotrophs

Answer 1

Dear student.

The answer is chemosynthetic bacteria.

Chemosynthetic bacteria are the group of bacteria that synthesize their organic food by obtaining energy from the inorganic substances. The energy required for synthesis of food does not come from the sun but from the oxidation of inorganic molecules such as nitrites, nitrates, ammonia, etc. They play key role in recycling nutrients such as nitrogen, sulphur, iron, etc.

Regards.