Presence of casparian strips is the characteristic feature of$-$

Which type of primary xylem is present in the given figure?

The given figure shows a section of a root apex. Select the correct option for $P$ and $Q$.

	$P$	$Q$
$A$	Epiblema	Cortex
$B$	Cortex	Epiblema
$C$	Stele	Cortex
$D$	Cortex	Stele

Complete the following analogy-type questions:
$(i)$ Innermost layer of cortex : Endodermis :: Layer just inside the endodermis : ........
$(ii)$ Adaxial epidermis in dorsiventral leaf : Palisade parenchyma :: Abaxial epidermis : ...........

Radial vascular bundles are found in .........

The transition from the exarch condition of the root to the endarch condition of the stem occurs in the ..........