Anticlinal divisions in an organ cause its growth in

In which cells does the synthesis of cyclin proteins occur?

$A$. According to Clowes,the root apex consists of an inverted cup-like structure.
$B$. $A$ low amount of $RNA$,$DNA$,and protein is a characteristic of the waiting meristem.
$C$. Cells of the reserve meristem can divide only when the root apex gets injured.

What are meristems?

State the location and function of different types of meristems.

What are the structural characteristics of $(a)$ Meristematic cells near the root tip and $(b)$ The cells in the elongation zone of the root?