Explain the distribution pattern of mechanical tissue in a stem and root of a dicotyledonous plant. 

Explain the distribution pattern of mechanical tissue in a stem and root of a dicotyledonous plant. 

• In stems, mechanical tissues are found in vascular bundles, pith, cortex and pericycle around the periphery where they resist compression and extension as the stem bend.
• In roots, mechanical tissues are arranged in a central stele where they exert a force that counteract the pull of the shoots which are often blown from side to side. They also resist compressional forces from the surrounding soil.

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