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CBSE - IX - Biology - Tissues


Asked by vk1994 16th August 2008, 12:23 AM
Answered by Expert


  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 Expert 16th August 2008, 8:56 AM

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