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The correct answer for the question above is letter a. The main function of cellulose in plants is to provide physical support. Cellulose makes plants parts strong. For instance, the stems, leaves and branches are rigid because of the tough walls that surrounds the cells.
Cellulose is sometimes made from cotton. Pat Canova/Photographer's Choice RF/Getty Images. Cellulose is a molecule comprised of carbon, hydrogen, and oxygen, and is found in the cellular structure of virtually all plant matter.This organic compound, which is considered the most abundant on earth, is even excreted by some bacteria.Cellulose provides structure and strength to the cell walls of plants and provides fiber in our diets. Although some animals, such as ruminants, can digest cellulose, humans cannot.alorie Reducer â Cellulose provides a lot of volume or bulk in food but because it is indigestible to humans, it has no caloric value. For this reason, cellulose has become a popular bulking agent in diet foods.