Question:
In the cell wall of higher plants, the network of pectins consists of cross-linked _______.
In the cell wall of higher plants, the network of pectins consists of cross-linked _______.
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Pectin itself is a type of complex carbohydrate.
Updated On: Jul 4, 2026
- proteins
- lipoproteins
- lipids
- polysaccharides
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The Correct Option is D
Solution and Explanation
Step 1: Pectins are themselves acidic polysaccharides, mainly chains of galacturonic acid, present in the primary cell wall and middle lamella.
Step 2: These pectin chains are cross-linked to one another, often through calcium ion bridges between adjacent polygalacturonic acid chains, building a gel like polysaccharide network.
Step 3: Proteins, lipoproteins and lipids are not the cross-linked units of this pectin network, so polysaccharides is correct.
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