Periclinal division in a cell takes place by

Deciduous plants shed their leaves during hot summer or in autumn. This process of shedding of leaves is called abscission. Apart from physiological changes, what anatomical mechanism is involved in the abscission of leaves ?

Trees may be damaged by animals which rub against them, wearing away a strip of bark right around the tree trunk and exposing the xylem. The tree will then

Members of Winteraceae, Tetracentraceae and Trochodendraceae

Companion cells are closely associated with

Histogen theory states that epidermis is derived from the