Read Root Mineral Uptake
A focused NSEB read for the root mineral uptake pattern. Learn the linked concept, then apply it in the source questions.
Living-system questions are solved by matching a structure or organism to its function, process and stated condition.
Water moves across a membrane from dilute to concentrated
Water crosses the membrane from dilute to concentrated
For osmosis, track water—not solute—across a semi-permeable membrane. The concentration difference determines the net direction.
Root Mineral Uptake
Suberin barrier forces selective symplastic entry. Apoplastic movement through root cell walls is blocked at the endodermis by the Casparian strip, which is rich in suberin. This forces water and dissolved minerals to cross a selectively permeable plasma membrane before entering the stele, preventing indiscriminate entry of ions.
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- ✓Suberin barrier forces selective symplastic entry
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