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Question

The concentration of mineral nutrient elements is higher elements is higher inside the root-hairs than in the surrounding soil. How do roots take them in from the soil?

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Solution

If the concentration of mineral nutrient elements is higher inside the root-hairs than in the surrounding soil, then roots take them in from the soil by ‘active transport’. In, active transport, the mineral ions are forcibly carried from the surrounding soil i.e. the region of their lower concentration into the roots i.e. the region of their higher concentration through the cell membrane by the expenditure of energy. This energy is supplied by the cell in the form of ATP.


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