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difference between collenchyma and sclerenchyma

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Collenchyma

The structure of collenchyma is similar to parenchyma but it is characterized by the deposition of extra cellulose at the corners of the cells.

Collenchyma is a mechanical tissue, its main function is to provide support to those organs where it is found.

It is found in the outer regions of cortex (stems, petioles).

Sclerenchyma

The structure of these cells are roughly spherical, although it may vary considerably in size and shape, the primary cell wall is thickened with the deposits of lignin.

Their main function is to provide mechanical support and are most commonly found in the cortex, pith phloem, fruits and seeds.


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