Functions of parenchyma:

• The main function of parenchyma is to store and assimilate food. Hence, they are referred to as food storage tissues.
• Serves as a packing tissue to fill the spaces between other tissues and maintain the shape and firmness of the plant.
• Stores waste products of plants.

Functions of collenchyma:

• A mechanical tissue and provides mechanical support and elasticity to the stems of dicot plants.
• Cells possess chloroplast, then it is involved in manufacturing sugar and starch.
• Provides tensile strength and flexibility to the plant body.

Function of sclerenchyma:

• provides mechanical strength to the plant.
• makes the plant body rigid, flexible, and elastic.