Mention the role of Methanobacterium in rumen of cattle.

Explanation

**Step-by-Step Solution:**

1. **Introduction to Methanobacterium**:
- Methanobacterium is a type of methanogen, which are microorganisms that produce methane gas as a metabolic byproduct in anoxic conditions.

2. **Presence in Rumen**:
- Methanobacterium is found in the rumen of cattle, which is a specialized stomach compartment that aids in the digestion of fibrous plant material.

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