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Question
The components of plant collenchyma cell wall, an acid carbohydrate, is a polymer of which of the following?
The components of plant collenchyma cell wall, an acid carbohydrate, is a polymer of which of the following?
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Solution
The correct option is C Galacturonic acid
Pectins are the mucopolysaccharides that occur in the cell wall of plant cells like the collenchyma cells. Pectic acid is a polymer of 1,4 D-galacturonic acid. Calcium pectate and some magnesium pectate is a major constituent of middle lamella. Pectic cell wall polysaccharides owe their high negative charge to the presence of D-galacturonate. Biochemically, it is a monosaccharide and appears to be present only in plants and some prokaryotes. Thus, the correct answer is option C.
Pectins are the mucopolysaccharides that occur in the cell wall of plant cells like the collenchyma cells. Pectic acid is a polymer of 1,4 D-galacturonic acid. Calcium pectate and some magnesium pectate is a major constituent of middle lamella. Pectic cell wall polysaccharides owe their high negative charge to the presence of D-galacturonate. Biochemically, it is a monosaccharide and appears to be present only in plants and some prokaryotes. Thus, the correct answer is option C.
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