One cannot age a tree by its rings if that tree is located in which of the following forests?

In this organ,the vascular cambium is initially wavy and later becomes circular.

During which season does the plant exhibit maximum growth?

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:

Which of the following represents the correct sequence of layers from the center towards the periphery in a dicot stem?

The vascular cambium is ..........