The name given to oblique thin areas which are found in the thick walls of both sclerenchyma fibres and sclereids is- * pits pores plates tubes
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Answer:Sclerenchyma consists of long, narrow cells with thick and lignified cell walls having few pits. It is dead and without protoplasts. On the basis of structure, origin and development, sclerenchyma may be either fibres or sclereids. The fibres are thick-walled, elongated and pointed cells. The sclereids are spherical, oval or cylindrical, highly thickened dead cells with very narrow lumen. These are found in the fruit walls of nuts; pulp of fruits like guava, pear and sapota; seed coats of legumes and leaves of tea. Sclerenchyma provides mechanical support to organs.
Thus, the correct answer is 'Sclerenchyma cells are usually dead and without protoplasts.'
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