What is the type of hypodermis present in the stem of maize?

Complete the following analogy-type questions:
$(i)$ Root : Root hair :: Stem : ...........
$(ii)$ Dicot stem : Open vascular bundle :: Monocot stem : ...........

In the stem of $Cucurbita$,the vascular bundles are .......

Select a set having correct match.

Dicot stem

Monocot stem

In which of the following,the cortex,endodermis,pericycle,and pith are not clearly distinguishable?

The innermost layer of the cortex,which is also known as the starch sheath,is: