Promeristem gives rise to which meristem?

The meristematic tissue responsible for the cutting of vascular tissue $(xylem \text{ and } phloem)$ is called:

The cells in the root and shoot apex regions are:

$A$. 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.

Increase in length of the plant axis is caused by:

Which of the following plant groups primarily utilizes apical meristem for growth and development?