Starch, Cellulose, Glycogen, Chitin are polysaccharides found among the following. Choose the one appropriate and write against each.

Cotton fibre__________________

Exoskeleton of cockroach________________________

Liver_____________________

Peeled potato______________________

Chemical composition of cotton fibre:

• Cotton fibre contains the largest amount of cellulose (nearly 90$\%$ of cellulose).
• Cellulose is a polysaccharide formed when $\beta$ -D-glucose units are linked together by a $\beta$ -1,4 glycosidic linkage.
• It forms the main component of the plant cell wall.

Final answer: Cotton fibre - Cellulose

Chemical composition of exoskeleton of cockroach:

• The exoskeleton of the arthropods (cockroach) is made up of chitin.
• Chitin is a polysaccharide composed of N-acetyl glucosamine subunits. The chitinous exoskeleton prevents desiccation and provides protection against predation.

Final answer : Exoskeleton of cockroach - Chitin

Chemical composition of liver:

• Glycogen is a storage polysaccharide, found in the liver and muscles of animals.
• Glycogen is a branched homopolymer of glucose. Glucose residues are linked linearly by $\alpha$-1,4 glycosidic bonds and approximately every ten residues a chain of glucose residues branches off via $\alpha$-1,6 glycosidic linkages.

Final answer: Liver - Glycogen

Chemical composition of peeled potato:

• Peeled potato contains starch.
• Starch is a polysaccharide made up of glucose monomers arranged into amylose and amylopectin components.
• It forms a helical structure.

Final answer: Peeled Potato - Starch