The trees have in them a large amount of:

Which of the following meristems is responsible for extrastelar secondary growth in dicotyledonous stems?

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

$A$ timber merchant told a customer that the log of wood he is purchasing belongs to a $20$-year-old tree. He did so by

Periderm is produced from

Read the components $a$ to $d$ given in the note and identify the correct sequence of components from the outside to the inside of a mature stem:
$(a)$ Secondary cortex
$(b)$ Wood (Secondary xylem)
$(c)$ Secondary phloem
$(d)$ Phellem (Cork)