\tPOINTS FOR COMPARISONPARENCHYMACOLLENCHYMASCLERENCHYMAType of cellsLiving plant cells which originate from ground and protoderm meristem.Living plant cells which originate from the pro-cambium.Dead plant cells which originate from ground meristem and protoderm procambium.LocationPresent in every soft part of the plant.Found in leaves, stems, and petioles.Found in mature parts of the plants or trees.Nature of cellsUnspecialized and living cells.Specialized cells and living cells.\xa0Specialized, matured and dead cells.Cell Shape\xa0Generally isodiametric.ElongatedSclereids, elongated and fibre shape.Cell wallThin cell wall present made up of cellulose.Uneven cell wall made up of pectin and hemicellulose.Hard and thick cell wall made up of lignin.Intercellular space between the cellsPresentLess space presentAbsent, so cells are tightly packed.FunctionHelp in storage of foods, in gaseous exchange, and in photosynthesis.Provide mechanical support and elasticity to the plant.Provide mechanical support to the plant, help in transportation of water and nutrients to the plants.\t