The order of bacteria acative in conversion of organic wates in to biogas is

Options

A. Hydrolytic `rarr` Acetogenic `rarr` Methanogenic
B. Methanogenic `rarr` Acetogenic `rarr` Hydrolytic
C. Methanogenic `rarr` Hydrolytic `rarr` Acetogenic
D. Acetogenic `rarr` Methanogenic rarr Hydrolytic

Answer

To answer the question regarding the order of bacteria active in the conversion of organic waste into biogas, we can break down the process into several steps:

### Step-by-Step Solution:

1. **Understanding Biogas Production**:
- Biogas is primarily composed of methane (CH4) and is produced through the anaerobic digestion of organic waste. This process occurs in the absence of oxygen.

2. **Identifying the Types of Bacteria Involved**:
- The conversion of organic waste into biogas involves several types of bacteria that work in a sequential manner. These bacteria can be categorized into three main groups based on their roles in the digestion process.

3. **Hydrolytic Bacteria**:
- The first group is hydrolytic bacteria. These bacteria break down complex organic materials (like carbohydrates, fats, and proteins) into simpler compounds (like sugars, fatty acids, and amino acids). This step is crucial as it prepares the organic matter for further digestion.

4. **Acetogenic Bacteria**:
- The second group is acetogenic bacteria. These bacteria convert the products of hydrolysis (the simpler compounds) into acetic acid, hydrogen, and carbon dioxide. This step is important as it bridges the gap between the hydrolysis and methanogenesis stages.

5. **Methanogenic Bacteria**:
- The final group is methanogenic bacteria. These bacteria convert the acetic acid and other substrates into methane (CH4) and carbon dioxide (CO2). Methanogens are strictly anaerobic and are essential for the production of biogas.

6. **Conclusion**:
- The order of bacteria involved in the conversion of organic waste into biogas is: Hydrolytic bacteria → Acetogenic bacteria → Methanogenic bacteria. Therefore, the correct answer to the question is that the active orders of bacteria are hydrolytic, acetogenic, and methanogenic.

### Final Answer:
The order of bacteria active in the conversion of organic waste into biogas is Hydrolytic → Acetogenic → Methanogenic.

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