Per NCERT, the cell wall is PERMEABLE while the cell membrane is SELECTIVELY PERMEABLE. Why does this matter for plants?
APermeability is irrelevant to plant nutrition
BThe wall blocks everything; only the membrane allows passage
CThe membrane blocks everything; only the wall allows passage
DIt allows water + dissolved minerals from the soil to pass through the wall freely, while the membrane controls which substances actually enter the cell — together they enable root absorption
Answer & Solution
Correct answer: D. It allows water + dissolved minerals from the soil to pass through the wall freely, while the membrane controls which substances actually enter the cell — together they enable root absorption
Per NCERT §2.2.2, the permeable wall + selectively permeable membrane combination enables controlled root uptake. The other options misstate.
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