Cork cells are impervious due to deposit of
A. Cutin – a waxy substance present in the cuticle.
B. Lignin – an organic polymer present in the cell wall of sclerenchyma and tracheary elements.
C. Suberin – an inert impervious waxy substance present in the cell walls of cork cells.
D. Chitin – is a complex polysaccharide present in the cell wall of fungi, exoskeleton of arthropods.
So, the correct option is ‘Suberin’.