Yes, paper is considered a polymer.
Paper's primary component is cellulose, which is a naturally occurring polymer. Polymers are large molecules made up of repeating subunits called monomers. In the case of cellulose, the monomer is glucose (a type of sugar). These glucose molecules link together to form long chains, creating the cellulose polymer.
Cellulose is a major structural component of plant cell walls, providing rigidity and support. When trees are processed into paper, the cellulose fibers are extracted and rearranged to form a sheet. Other substances like lignin (another polymer), hemicellulose (also a polymer), and additives may also be present in paper, depending on the type of paper. However, cellulose remains the most abundant and essential polymer component. The reference text confirms that "man-made materials as concrete, glass, paper, plastics, and rubbers" are examples of materials that contain polymers.
