Epidermis in stem is produced from
Protoderm
Procambium
Ground meristem
Calyptrogen
Companion cells are part of angiospermic
Walls of sclerenchyma are
The first formed primary phloem is referred as ...$A$... The later formed primary phloem is referred as ...$B$...
Choose the correct combination of $A$ and $B$
Function of storage is performed by