The bacterium responsible for biogas production are collectively called

Options

A. Methonogens
B. Thermoacidophiles
C. Halophiles
D. Cyanobacterium

Answer

**Step-by-Step Solution:**

1. **Understanding Biogas Production**: Biogas is produced through the anaerobic digestion of organic materials. This process involves the breakdown of organic waste in the absence of oxygen.

2. **Identifying the Role of Microorganisms**: During anaerobic digestion, specific microorganisms are responsible for breaking down the organic matter and producing gases.

3. **Recognizing the Key Microorganisms**: The primary microorganisms involved in the production of methane gas (the main component of biogas) are known as methanogens.

4. **Defining Methanogens**: Methanogens are a group of archaea (not bacteria in the traditional sense) that produce methane as a metabolic byproduct in anaerobic conditions.

5. **Conclusion**: Therefore, the bacteria responsible for biogas production are collectively called methanogens.

**Final Answer**: Methanogens.

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