Suberin is a ..........

Nucleus is absent in

$I.$ Protection of internal tissues
$II.$ Protection of leaves from microbes
$III.$ Gaseous exchange
$IV.$ Reduction in the rate of transpiration through epidermal cells due to trichomes
Which of the functions of the epidermis is/are relevant from the above-given statements?

How many of the following structures are associated with the conduction of water?
Tracheids,Xylem parenchyma,Xylem fibers,Vessels

Which one of the following is not part of the Epidermal tissue system?

Amphiphloic $(bicollateral)$ condition of stele means that