alleryStart learning →Which polysaccharide makes up most of the plant cell wall?
AGlycogen, the animal storage polymer
BAmylopectin, a branched starch form
CChitin, a nitrogen bearing sugar polymer
DCellulose, an unbranched glucose polymer
Answer & Solution
Correct answer: D. Cellulose, an unbranched glucose polymer
1. The plant cell wall is mostly cellulose, and this provides the cell with structural support.
2. Cellulose is also the most abundant natural biopolymer, and wood and paper are largely cellulosic.
3. Glycogen is an animal storage polymer, so it is not a plant wall material.
4. Chitin forms arthropod exoskeletons and fungal cell walls, not plant walls.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 3 "Biological Macromolecules", section 3.2 Carbohydrates_
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