What is the main component of the plant cell wall?
Answer and explanation
Correct answer: C. Cellulose
- Step 1: The plant primary cell wall is a rigid extracellular matrix providing structural support and tensile strength to plant cells.
- Step 2: Its principal structural component is cellulose, an unbranched polymer consisting of -(1,4)-linked D-glucose units organized into microfibrils.
Answer
Cellulose.
Why not the others: 'Chitin' is the structural polysaccharide found in fungal cell walls and arthropod exoskeletons; 'Peptidoglycan' (murein) forms bacterial cell walls; 'Keratin' is a fibrous structural protein in vertebrate hair, nails, and skin.
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