The outside of the epidermis is often covered with a waxy layer; its function is.....

Some cells of the cortex lack:

Write a note on the Vascular Tissue System.

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.

Some vascular bundles are described as open because these

When the 'intrafascicular cambium' is present within the vascular bundle,the vascular bundle is called ........