Supporting tissues are further divided into three parts:
Parenchyma forms the bulk the plant body. Parenchyma cells are living and possess the power of division.
Tissue also consists of living cells is characterized by the deposition of extra cellulose at the corners of the cells.
Differences between Parenchyma and Collenchyma:
|The tissue consists of thin-walled living cells.||The tissue consists of cells having localised thickening in their cell walls.|
|It is distributed in almost all the parts of the plant body.||
It occurs mostly in the aerial parts of the plants and is restricted to the other layers.
|The living cells of parenchyma assimilate and store food. They also store waste products.||Collenchyma is the chief mechanical tissue in parts of a young plant particularly in the young dicotyledonous stems.|
Sclerenchyma cells are dead cells and they are devoid of protoplasm.
Comparison between Collenchyma and Sclerenchyma:
|It consists of living cells.||It consists of dead cells.|
|It cells contain cytoplasm.||
It cells are empty.
|Its cell walls are cellulosic.||Its cell walls are lignified.|
|The thickening of cell wall is not uniform.||Cell wall thickening is uniform.|
|Lumen of the cell is wide.||Lumen of the cell is narrow.|
|It provides mechanical support and elasticity to the plant body.||It is chiefly mechanical tissue.|
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