Best Answer: All plant cells have a cell membrane and a cell wall. the cell membrane is semi permiable and the cell wall is made of cellulose and simply keeps a rigid rectangular shape.Source(s):Claudia · 6 years ago.Thumbs up.est Answer: All plant cells have a cell membrane and a cell wall. the cell membrane is semi permiable and the cell wall is made of cellulose and simply keeps a rigid rectangular shape. Source(s): Claudia · 6 years ago. Thumbs up.