The youngest layer of secondary xylem in the wood of dicot plant is located

Identify the correct statements:

$A$. Lenticels are the lens-shaped openings permitting the exchange of gases.

$B$. Bark formed early in the season is called hard bark.

$C$. Bark is a technical term that refers to all tissues exterior to vascular cambium.

$D$. Bark refers to periderm and secondary phloem.

$E$. Phellogen is single-layered in thickness.

Choose the correct answer from the options given below:

Initiation of lateral roots and vascular cambium during secondary growth takes place in cells of :

The heartwood cannot conduct water because of