Multiple choice

Which step of nitrogen cycle is not appreciated by farmers?

  1. Lightning fixes nitrogen as compounds in the soil.

  2. Blue-green algae fix nitrogen as compounds in the soil.

  3. Denitrifying bacteria turn the nitrogen compounds back into gaseous nitrogen.

  4. Ammonia, nitrite, nitrate, etc., remain in the soil.

  5. Presence of rhizobium in root nodules.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This step reduces fertility. Hence, it limits plant growth and causes loss to the farmer.

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