Dermal tissue is derived from
Periblem
Dermatogen
Procambium
Pleurome
Function of companion cells is
Histogen theory states that epidermis is derived from the
Cork is a derivative of
$T.S.$ of stem of Cucurbita can be identified from the $T.S.$ of sunflower stem by the presence of
The quiescent centre in root meristem serves as a