Q. Bacteria that fix $CO_{2}$ by using chemical energy as source, are
A) Photoautotrophs
B) Photoheterotrophs
C) Chemoautotrophs
D) Chemoheterotrophs
Explanation
Chemoautotrophs (chemosynthetic) use chemical energy released by biological oxidation of certain inorganic substances for the synthesis of food, $e.g.,\ \ Nitrosomanas,\ Nitrosococcus$ and some other nitrogen cycle bacteria.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.