The corner of the cells of collenchyma tissue in plant are thickened due to deposition of ________

The correct answer is: C. Cellulose and pectin

Collenchyma is a type of plant tissue that provides support and flexibility. It is found in the stems and leaves of many plants. The cells of collenchyma are elongated and have thickened corners. The thickening is due to the deposition of cellulose and pectin.

Lignin and suberin are also deposited in plant cells, but they are not found in collenchyma cells. Lignin is a complex polymer that is found in the cell walls of wood and bark. Suberin is a waxy substance that is found in the cell walls of cork.

Chitin is a polysaccharide that is found in the exoskeletons of insects and crustaceans. It is not found in plant cells.