The feature which is common to both heartwood and sapwood is
Both are the regions of secondary xylem
Both are involved in the conduction of water
Both comprise dead elements with accumulation of aromatic compounds
Both are located in the central layers of the stem
The waxy substance associated with cell walls of cork cells is or cork cells are impervious to water because of the presence or what is deposited on cork cells
Initiation of lateral roots and vascular cambium during secondary growth takes place in cells of :
The vascular cambium in dicots is
Besides phellem, phellogen, root periderm comprises of