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Question
Which of the following elements can be obtained by plants directly from the air?
Which of the following elements can be obtained by plants directly from the air?
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Solution
The correct option is C Carbon
∙ Plants take in carbon dioxide directly from the air. Thus, carbon and oxygen are obtained directly from the air.
∙ However, plants cannot directly utilise atmospheric nitrogen from the air. It needs to be converted into ammonium and nitrates to be used by the plant.
∙ Boron and iron are soil nutrients which are required in less quantities.
∙ Plants take in carbon dioxide directly from the air. Thus, carbon and oxygen are obtained directly from the air.
∙ However, plants cannot directly utilise atmospheric nitrogen from the air. It needs to be converted into ammonium and nitrates to be used by the plant.
∙ Boron and iron are soil nutrients which are required in less quantities.
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