Which are the plant tissues responsible for the supporting of the plant?

The plant supporting tissues are the collenchyma and the sclerenchyma.

The collenchyma is made of living and elongated cells that accumulate cellulose and pectin in some regions of the cell wall making them unequally thick and therefore providing flexibility.

The sclerenchyma is made mostly of dead cells killed by lignin deposition (lignin is an impermeable biopolymer) forming elongated, rigid and impermeable fibers. The sclerenchyma is a plant tissue extensively used in the textile industry.

Image Diversity: collenchyma sclerenchyma