Which one of the following is lactic acid utilising bacteria?

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Which one of the following is lactic acid utilising bacteria? Answer: Megasphaera elsdenii

Megasphaera elsdenii is a key rumen bacterium that utilises lactic acid, helping to prevent its excessive accumulation and thereby protecting ruminants from acidosis caused by rapid fermentation of starchy feeds.

Question context

This question is part of 🦠 Microbiology within the broader 🧬 Medical Science subject and appears in the PPSC Punjab Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.