Collenchymatous hypodermis occurs in $:-$

$A$ student observed the $T.S.$ of a plant organ slide under a microscope. He observed the vascular bundles in the stelar region as conjoint,collateral,and open. Based on these features of the vascular bundle,identify the correct option from below.

Monocot stem differs from dicot stem in having

In which of the following are radial vascular bundles and conjoint vascular bundles found,respectively?

In $Barley$ stem,vascular bundles are:

In which of the following,the cortex and pith are not clearly differentiated?