Choose the incorrect statementsI. Sclereids have only branched pits.     II. Lumen is present in collenchyma cells.III. Sclereids always have pointed ends.    IV. Some parenchyma cells have suberin in their cell walls.

Sclereids have both branched and unbranched canal like pits. Lumen is present only in dead cells like fibers and sclereids and even in tracheary elements. Sclereids usually have rounded ends. Endodermal parenchyma has suberin in their cell walls which are called as casparian strips.