Casparian strip is made up of

🔑Key Points:
-Casparian strips are located on the roots of the endodermis of vascular plants.
-It is a band of cell wall material deposited on the radial as well as tangential walls of the endodermis.
-The endodermis is the innermost layer of the cortex. It is made up of parenchymatous cells.

✅Explanation:
-Casparian strips are made of suberin.
-Suberin is a water-impermeable and waxy material.
-It is a lipophilic, hydrophobic polyester biopolymer.
-It blocks the passive flow of water and solutes into the stele of a plant.
-Suberin prevents water from entering the pericycle.
-Thus, Casparian strips help in producing root pressure.

🔴Additional Information:
-Chitin – is the N-acetylglucosamine polymer found in the cell wall of fungi and exoskeletons of Arthropods.
-Cellulose – is a polysaccharide and a structural component of the primary cell wall of plants.
-Pectin – is a heteropolysaccharide present in the primary cell wall and middle lamella of plants.