What do xylem fibers provide strength to?

In which of the following are amphivasal (leptocentric) vascular bundles found?

Select the correct statements.
$I.$ Epidermal cells have a small amount of cytoplasm and a large vacuole.
$II.$ $A$ waxy layer, the cuticle, is absent in roots.
$III.$ Root hairs are unicellular, while stem hairs/trichomes are multicellular.
$IV.$ Trichomes are branched/unbranched, soft/stiff, and secretory or transpiration-preventive.
$V.$ Guard cells are dumb-bell-shaped in monocots (e.g., grass) and bean-shaped in dicots.

In which of the following epidermis is the cuticle absent?

Which of the following cells lacks a nucleus at maturity?

What is the epidermal cell modification in plants that prevents water loss?