What constitutes the cambial ring?
$\Rightarrow$ Interfascicular cambium : Interfascicular cambium and Intrafascicular cambium collectively form cambial ring. It is formed due to meristematic activity of them.
$\Rightarrow$ The cambium which is found between xylem and phloem, is called Intrafascicular cambium and new cambium formed between two vascular bundle is called Interfascicular cambium. Cambium ring is foamed by connecting two type of cambiums.
Desert grasses often roll their leaves due to presence of
Growth rings are absent or not sharply demarcated in the trees of
Give differences: Heartwood and Sapwood
Tissue present in an annual ring is
In the given diagram of lenticel, label $A, B, C$ in the given option