Laticiferous vessels are found in

The stele is composed of

The chief function of vessels in the plant body is to:

Select correct features w.r.t. trichomes in the shoot system:
$(a)$ Usually unicellular
$(b)$ Branched or unbranched
$(c)$ May be secretory
$(d)$ Soft or stiff
$(e)$ Helps against transpiration

When in a stele the xylem is surrounded by phloem,the condition is called

Generally,the cells of the cortex lack $.....$.