Common bottle cork is a product of ............ .

Given below are two statements: One is labelled as Assertion $A$ and the other is labelled as Reason $R$:
Assertion $A$: Late wood has fewer xylary elements with narrow vessels.
Reason $R$: Cambium is less active in winters.
In the light of the above statements,choose the correct answer from the options given below:

Secondary growth does not occur in monocot stems because the vascular bundles are .....

$A$ timber merchant told his customer that the wood log he was buying was from a $20$-year-old tree. How did he suggest this?

Match List-$I$ with List-$II$:

List-$I$	List-$II$
$(a)$ Lenticels	$(i)$ Phellogen
$(b)$ Cork cambium	$(ii)$ Suberin deposition
$(c)$ Secondary cortex	$(iii)$ Gaseous exchange
$(d)$ Cork	$(iv)$ Phelloderm

Choose the correct answer from the options given below:

Which of the following statements about cork cambium is incorrect?