Collenchymatous hypodermis is a characteristic of:

In how many of the following plant organs are open vascular bundles found? Dicot root,Dicot stem,Monocot root,Monocot stem,Dicot leaf,Monocot leaf.

Which of the following parts of a dicot stem contains tissue that provides mechanical strength to the young stem?

Match the following:

Column-$I$	Column-$II$
$(1)$ Monocot stem	$(a)$ Bulliform cells
$(2)$ Monocot root	$(b)$ Casparian strips
$(3)$ Monocot leaf	$(c)$ Polyarch xylem bundles
	$(d)$ Vascular bundles conjoint and closed

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

Conjoint collateral vascular bundles and eustele are present in ..........