The term 'meristem' was coined by:

The following figure shows a longitudinal section of a shoot apex. Select the correct option for $P$ and $Q$.

Option	$P$	$Q$
$A$	Meristematic tissue	Plumule
$B$	Plumule	Differentiated vascular tissue
$C$	Plumule	Axillary bud
$D$	Meristematic region	Axillary bud

Axillary bud and terminal bud are derived from the activity of

The quiescent centre is a:

$A$. 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.

Promeristem is found in