LIFE SCIENCE

Detailed explanation-1: -Cellulose and chitin are carbohydrates while starch and glycogen are carbohydrates.

Detailed explanation-2: -Plant cell walls are made up of cellulose. Chitins are present in the exoskeleton of arthopods. While starch and glycogen are carbohydrates. Starch is present as storage carbohydrates in plant tissues whereas glycogen are present in animal cells as storage carbohydrates.

Detailed explanation-3: -Complex carbohydrates that are found in living things include starch, glycogen, cellulose, and chitin.

Detailed explanation-4: -The difference between cellulose and starch is that starch is a branched polymer, while cellulose is a linear polymer. Both starches and cellulose are made of glucose molecules, but the difference between them is that starch is a branched polymer, while cellulose is a linear polymer.