Question

Biogas generation is a three stage anaerobic digestion of animal and other organic wastes. Study the following flow chart and select the correct option for stages I, II and Ill.

• A. In stage - I, anaerobic microorganisms bring about enzymatic breakdown of complex organic compounds into simple soluble compounds or monomers.
• B. In stage - II, monomers are converted into organic acids by fermentation causing microbes.
• C. In stage - Ill, organic acids are acted upon by methanogenic bacteria to produce biogas.
• D. All of these

Answer 1

The correct option is D All of these

In stage - I, anaerobic microorganisms bring about enzymatic breakdown of complex organic compounds into simple soluble compounds or monomers. In stage - II, monomers are converted into organic acids by fermentation causing microbes. In stage - Ill, organic acids are acted upon by methanogenic bacteria to produce biogas.

So, the correct option is 'All of these'