Which type of arrangement of vascular bundles occurs in the roots of monocots?

Casparian strip and passage cells are observed in $:-$

Pith is absent in $...........$.

Give differences: Dicot root and Monocot root.

The Casparian strips of the root endodermis contain a mixture of:

$(i)$ Unicellular hair
$(ii)$ Endodermis with passage cells
$(iii)$ Pith$-$small$/$inconspicuous
$(iv)$ Radial vascular bundle
$(v)$ Xylem exarch
$(vi)$ $2-4$ xylem and phloem
The above description refers to which of the following?