Osmosis<span> is the phenomenon of the movement of Solvent molecules from lower solute conc. to higher solute conc. through a semi-permeable membrane to make solute conc. equal on both sides.</span>
Is there supposed to be a picture for this?
If you're talking about eukaryotic cells then it's the cell wall. If it's a prokaryotic cell sometimes the slime layer secreted by some bacteria may harden and form a capsule around the bacterial cell.
Hope i helped!
