Question:

Methanogens are:

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Methanogens = methane producers in anaerobic digesters (e.g., biogas production).
Updated On: Jun 2, 2025
  • Anaerobics used to produce methane from cellulosic waste
  • Anaerobics that enrich nitrogen content in soil
  • Earthworms aiding compost formation
  • Fungi in symbiosis with plants
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The Correct Option is A

Solution and Explanation

- Methanogens are archaebacteria that produce methane in anaerobic conditions (e.g., {Methanobacterium}).
- Found in biogas plants, cow dung, sewage.
Others: 
- (2) refers to nitrogen-fixers like Rhizobium.
- (3) Earthworms = vermicompost agents.
- (4) Fungi = Mycorrhiza.

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