Methanogens belong to

Options

A. Eubacteria
B. Archaebacteria
C. Dinoflagellates
D. Slime moulds

Answer

**Step-by-Step Solution:**

1. **Understanding Methanogens**: Methanogens are microorganisms that produce methane gas as a by-product of their metabolic processes. They are known for their ability to break down organic matter in anaerobic (hypoxic) conditions, where oxygen is limited or absent.

2. **Classification of Methanogens**: Methanogens are classified under the domain Archaea. This domain is distinct from Bacteria (Eubacteria) and is characterized by organisms that often thrive in extreme environments.

3. **Kingdom Monera**: Methanogens belong to the Kingdom Monera, which encompasses all prokaryotic organisms. Prokaryotes are defined by their lack of a true nucleus and membrane-bound organelles.

4. **Habitat**: Methanogens can be found in various habitats, including marshy and swamp areas, wetlands, and the rumen of cattle, where they play a role in the digestion of cellulose.

5. **Conclusion**: Given the options provided (eubacteria, archaebacteria, dinoflagellates, slime molds), the correct classification for methanogens is Archaebacteria.

**Final Answer**: Methanogens belong to **Archaebacteria** (Option B).

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