define-parenchyma,collenchyma n sclerenchyma.
Asked by vk1994 | 12th Jul, 2008, 01:09: PM
Parenchyma is a simple permanent plant tissue composed of thin-walled, unspecialized cells separated by intercellular spaces and which have not lost their power of division.
Collenchyma is a simple permanent plant tissue containing cells characterized by cell walls unevenly thickened with cellulose and hemicellulose and functioning mainly as flexible and supportive tissue.
Sclerenchyma is also a simple permanent plant tissue containing dead cells with heavily lignified cell walls and functioning as a strengthening tissue.
Answered by | 12th Jul, 2008, 04:19: PM
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