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

1. Halophiles
2. Thermoacidophiles
3. Methanogens
4. Eubacteria

Correct answer: Methanogens

Solution

Methanogens are primitive prokaryotes that live in anaerobic conditions and produce methane during decomposition of organic matter. In ruminant dung, they help convert waste into biogas, which contains methane as a major component.

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