How do plants take in nitrogen?

From the air

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Through the roots

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They make it in food

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Through leaves

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Solution

The correct option is B Through the roots
Plants get nitrogen in the form of nitrates ( ${N O}_{3}$ ) from the ground. This inorganic form of nitrogen dissolves in water and is absorbed by the plant when it takes in water through the roots. Plants cannot get nitrogen from the air.

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