Differentiate between parenchyma, collenchyma and sclerenchyma, on the basis of their cell wall.
|1.||Cell walls are relatively thin, and the cells in parenchyma tissues are loosely packed.||The cell wall is irregularly thickened at the corners, and there is very little space between the cells.||The cell walls are uniformly thickened, and there are no intercellular spaces.|
|2.||The cell wall in this tissue is made up of cellulose.||Pectin and hemicellulose are the major constituents of the cell wall.||An additional layer of the cell wall composed mainly of lignin is found.|
Concept: Plant Tissues - Permanent Tissue
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