The primitive prokaryotes responsibel for the production of biogas from the dung of ruminant animals include

Options

A. Eubacteria
B. Halophiles
C. Thermoacidophiles
D. Methanogens

Answer

To solve the question regarding the primitive prokaryotes responsible for the production of biogas from the dung of ruminant animals, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Prokaryotes**:
- Prokaryotes are single-celled organisms that lack a nucleus. They are classified into two main groups: eubacteria and archaebacteria.

2. **Identifying the Types of Microorganisms**:
- The question mentions four types of microorganisms: eubacteria, halophiles, thermoacidophiles, and methanogens. We need to evaluate which of these are involved in biogas production.

3. **Eubacteria**:
- Eubacteria are a large group of bacteria that can be found in various environments. While they play important roles in ecosystems, they are not specifically responsible for biogas production from ruminant dung.

4. **Halophiles**:
- Halophiles are organisms that thrive in high-salt environments. They are not typically associated with the digestion of ruminant dung or biogas production.

5. **Thermoacidophiles**:
- Thermoacidophiles are extremophiles that thrive in high-temperature and low-pH environments. Although they are interesting organisms, they are not primarily responsible for biogas production from ruminant dung.

6. **Methanogens**:
- Methanogens are a group of archaebacteria that produce methane as a metabolic byproduct. They are found in the digestive tracts of ruminant animals, such as cows and buffaloes, where they play a crucial role in breaking down organic matter and producing biogas (methane).

7. **Conclusion**:
- The primitive prokaryotes responsible for the production of biogas from the dung of ruminant animals are **methanogens**.

### Final Answer:
The primitive prokaryotes responsible for the production of biogas from the dung of ruminant animals include **methanogens**.