These have pits in their cell wallsI. parenchyma cells    II. Collenchyma cells    III. Fibers    IV. Sclereids

Pits are seen only in those cells with secondary cell walls because pits are regions of secondary cell wall where there is no deposition of secondary cell wall material. They may be simple pits or bordered pits. Since parenchyma and collenchyma have only primary wall they do not have pits but primary pit fields may  be present.