Plant water

Osmosis is the movement of water from a dilute (weak) solution across a semipermeable membrane, to a more concentrated (strong) solution (e.g. the smaller scale movement of water from cell to cell).

A semipermeable membrane (e.g. plant root), is a sieve of tiny pores too small to allow large molecules like sugar (C6H12O6) to pass through, but large enough to let small water molecules (H2O) through.