The microorganism used in production of biogas

Options

A. Methanobacterium
B. Chorella
C. Nostoc
D. Saccharomyces

Answer

**Step-by-Step Solution:**

1. **Understanding the Question:**
The question asks for the microorganism involved in the production of biogas. Biogas is primarily composed of methane and is produced through the anaerobic digestion of organic matter.

2. **Analyzing the Options:**
The options provided are:
- A) Methanobacterium
- B) Chlorella
- C) Nostoc
- D) Saccharomyces

3. **Evaluating Each Option:**
- **Option A: Methanobacterium**
- Methanobacterium is a type of methanogen, which belongs to the domain Archaea. These microorganisms are known for their ability to produce methane from organic matter under anaerobic conditions. They are crucial in the production of biogas, particularly in gober gas plants where cow dung is often used as a substrate.

- **Option B: Chlorella**
- Chlorella is a green alga that is primarily known for its nutritional value and is not involved in biogas production. It is used as a food supplement but does not produce methane.

- **Option C: Nostoc**
- Nostoc is a cyanobacterium (blue-green alga) that is primarily known for its ability to fix nitrogen. While it plays a role in the nitrogen cycle, it does not contribute to biogas production.

- **Option D: Saccharomyces**
- Saccharomyces is a genus of fungi, commonly used in baking and brewing. It is not involved in the production of biogas.

4. **Conclusion:**
After evaluating all the options, it is clear that **Methanobacterium** is the microorganism used in the production of biogas. Therefore, the correct answer is **Option A: Methanobacterium**.

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