Which microorganism is responsible for transforming ammonia into nitrite?

Plant Pathology MCQs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

PPSCFPSCNTSPakistan govt jobs
Subject
Plant Pathologyagriculture-mcqs › plant-pathology
Published
18 Oct 2021
Last updated
28 May 2026

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Explanation

Nitrosomonas bacteria play a key role in the nitrogen cycle by oxidizing ammonia into nitrite. In contrast, Nitrobacter converts nitrite into nitrate, while Azotobacter and Rhizobium are involved in nitrogen fixation.

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