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Minerals cannot be passively absorbed...

Minerals cannot be passively absorbed by the roots .

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(I ) Reason : All minerals cannot be passively absorbed by the roots because minerals are present in the soil as charged particles (ions) that cannot move across cell membranes .
(ii ) The concentration of minerals in the soil is usually lower than the concentration of minerals in the soil is usually lower than the concentration of minerals in the root , hence most minerals enter the root by active absorption requiring energy . hence minerals cannot be passively absorbed by the roots .
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Knowledge Check

  • In passive transport:

    A
    No energy expenditure is required
    B
    No involvement of physical forces like gravity
    C
    no involvement of physical forces like gravity
    D
    No involvement of osmosis

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