Archaebacteria that live in marshy areas are

Options

A. Halophiles
B. Methanogens
C. Acidophiles
D. Cryophiles

Answer

**Step-by-Step Solution:**

1. **Identify the Type of Bacteria**: The question asks about Archaebacteria that live in marshy areas. We need to focus on the specific group of Archaebacteria that thrive in such environments.

2. **Understand the Characteristics of Archaebacteria**: Archaebacteria are known for their ability to survive in extreme conditions. They are categorized into three main groups based on their environmental preferences.

3. **Classify the Groups of Archaebacteria**: The three groups of Archaebacteria are:
- Methanogens: These bacteria produce methane and are typically found in anaerobic environments, such as marshy areas.
- Halophiles: These bacteria thrive in high salt concentrations.
- Thermophiles: These bacteria prefer high-temperature environments.

4. **Determine the Correct Group for Marshy Areas**: Since marshy areas are often anaerobic and can produce methane, the group of Archaebacteria that live in these conditions is the Methanogens.

5. **Conclude the Answer**: Therefore, the Archaebacteria that live in marshy areas are Methanogens.

**Final Answer**: Methanogens.

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