Which of the following do constitute thickenings in collenchyma?

Lignin

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Cellulose

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Pectin

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Both B and C

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Solution

The correct option is A Both B and C
Collenchyma tissue possesses elongated cells with irregular thickening, mainly at the corners. They possess only thick primary cell wall made of cellulose and pectin. They provide support and structure. Therefore, option D is correct.

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