Lignin is an important constituent in the cell wall of

Vascular bundles in which xylem and phloem are situated at the same radius are termed as:

Select the correct option for the following statements:
$(i)$ The vessel element is made up of cells arranged one above the other.
$(ii)$ When xylem and phloem are arranged together on the same radius,it is called a conjoint/radial vascular bundle.

Cystolith mineral crystals are found in:

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

Identify the given conjoint vascular bundle.