Plant Ecology · Botany

What occurs during the process of 'Denitrification' in the nitrogen cycle?

  1. Atmospheric nitrogen is converted to ammonia
  2. Ammonia is converted to nitrites
  3. Nitrates are converted to gaseous nitrogen
  4. Plant proteins are broken down into ammonia
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Correct answer: Nitrates are converted to gaseous nitrogen

Denitrification is performed by specialized bacteria (like Pseudomonas) in anaerobic conditions. This process returns nitrogen to the atmosphere, completing the nitrogen cycle.

Difficulty: Medium Question 20 of 20

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