MediumBotanyCollenchyma
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Thickening material present in wall of collenchyma is
A
Pectin, cellulose, hemicellulose
B
Lignin, cellulose, hemicellulose
C
Hemicellulose, suberin, cellulose
D
Suberin, pectin, cellulose
Explanation
The collenchyma occurs in layers below the epidermis in most of the dicotyledonous plants. It is found either as a homogeneous layer or in patches, without Intercellular spaces. It consists of cells that are much thickened at the corners due to the deposition of cellulose, hemicellulose, and pectin. collenchymatous cells may be oval, spherical, or polygonal and often contain chloroplasts. These cells assimilate food when they contain chloroplasts. Intercellular spaces are absent. They provide mechanical support to the growing parts of the plant such as the young stem and petiole of a leaf.
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