Question
Why do plants use the nitrogen present in soil? How is this nitrogen replenished in the soil?
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Answer
Plants cannot absorb nitrogen in gas form, they need it in soluble form. Therefore, they use the nitrogen present in soil to prepare proteins.
Atmospheric nitrogen is fixed in soil by nitrogen-fixing bacteria such as Rhizobium, which live in the root nodules of leguminous plants such as gram, peas, beans, etc. In return, the plants provide food and shelter to the bacteria.
Atmospheric nitrogen is fixed in soil by nitrogen-fixing bacteria such as Rhizobium, which live in the root nodules of leguminous plants such as gram, peas, beans, etc. In return, the plants provide food and shelter to the bacteria.
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