Initiation of lateral roots and vascular cambium during the secondary growth takes place in these cells.

In dicot stem, secondary xylem lie towards the ...$A$... and secondary phloem lie towards the ...$B$...

Choose the correct combination of options for $A$ and $B$

The cork cambium, cork and secondary cortex are collectively called

$P -$ protein is found in

The innermost layer of cortex is called

Vessels are absent in