(D) Commercial cork is obtained from the bark of the cork oak tree,which is scientifically known as $Quercus \ suber$. This tree is native to southwes

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(D) Commercial cork is obtained from the bark of the cork oak tree,which is scientifically known as $Quercus \ suber$. This tree is native to southwest Europe and northwest Africa. The cork is harvested from the phellem (cork tissue) layer of the periderm,which is produced by the cork cambium (phellogen).