Question
Question: Casparia strips located in the _____ force water and nutrients to move across the cell membranes, al...
Casparia strips located in the _____ force water and nutrients to move across the cell membranes, allowing selective flow of water and nutrients to the xylem.
A
plasmodesmata
B
epidermis
C
endodermis
D
cortex
Answer
endodermis
Explanation
Solution
Casparian strips are bands of suberin and sometimes lignin found in the endodermis of the root. They block the apoplastic pathway, forcing water and nutrients to pass through the selectively permeable cell membranes, allowing for regulated uptake into the xylem.