All of the following involve osmosis,except:

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(C) Osmosis is the movement of water molecules across a semi-permeable membrane from a region of higher water potential to a region of lower water pot

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Water passing up a xylem vessel element to the xylem vessel element above it

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(C) Osmosis is the movement of water molecules across a semi-permeable membrane from a region of higher water potential to a region of lower water potential.$A$,$B$,and $D$ involve the movement of water across cell membranes,which is an osmotic process.In $C$,the movement of water through xylem vessels occurs due to the transpiration pull and the cohesive-adhesive properties of water molecules,which is a bulk flow process,not osmosis.

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