Question

Last step in biogas production is carried out by

• A. Decomposer microbes
• B. Fermentative microbes
• C. Methanogens
• D. Thermoacidophiles

Answer 1

The correct option is C Methanogens

Biogas production involves four steps:

• Hydrolysis
• Acidification
• Acetogenesis
• Methanogenesis

Last step in biogas production is methanogenesis in which methanogens convert the acetate, carbon dioxide and hydrogen formed in third step into methane carbon dioxide and water.

So, the correct answer is 'Methanogens'.