Write the functions of parenchyma, collenchymas and sclerenchyma.

Parenchyma: Parenchyma tissue provides support to plants and also stores food. In some situations, it contains chlorophyll and performs photosynthesis.

Collenchyma: It provides flexibility to plants so that they can easily bend without breaking. It also provides mechanical support to plants.

Sclerenchyma: It provides strength to the plants and enables them to withstand various strains.