The cell wall is mainly made up of ________ fibers.

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Multiple Choice

The cell wall is mainly made up of ________ fibers.

Explanation:
Cell walls in plants are built around cellulose fibers—long chains of glucose that line up into crystalline microfibrils. This fibrous network provides the main tensile strength and rigidity, allowing plant cells to maintain shape and resist internal turgor pressure. The surrounding matrix of hemicellulose and pectin anchors and spaces these fibers, while lignin adds extra stiffness in older, woody tissues. Chitin is the main component of fungal cell walls, not plants, and proteins, though present, do not form the primary fibrous scaffold. So the primary fibrous constituent is cellulose.

Cell walls in plants are built around cellulose fibers—long chains of glucose that line up into crystalline microfibrils. This fibrous network provides the main tensile strength and rigidity, allowing plant cells to maintain shape and resist internal turgor pressure. The surrounding matrix of hemicellulose and pectin anchors and spaces these fibers, while lignin adds extra stiffness in older, woody tissues. Chitin is the main component of fungal cell walls, not plants, and proteins, though present, do not form the primary fibrous scaffold. So the primary fibrous constituent is cellulose.

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