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CBSE Class 9 Answered

Differences
Asked by vk1994 | 16 Aug, 2008, 12:23: AM
answered-by-expert Expert Answer

  Parenchyma Collenchyma Sclerenchyma
1  Its cells are living  Its cells are living  Its cells are dead.
2  Cell walls are thin.  Cell walls are thin, but with cellulose deposition at corners.  Cell walls are greatly thickened with lignin.
3  Cell walls do not show any deposition.  Cell wall thickening is not uniform  Cell wall thickening is uniform.
4  Parenchyma tissue acts as a packing tissue, provides support  to plants and also stores food.  It provides mechanical support and elasticity to the plant body.  It provides mechanical strength and and protection  to the plants
5  These cells are capable of dividing  These cells, though living, do not have the power of division  These cells are dead and hence cannot divide.

Answered by | 16 Aug, 2008, 08:56: AM
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