Submerged hydrophytes show

Which of the following is not true for the vascular bundles of monocotyledonous stems?

The transverse section of a plant material shows the following anatomical features: $(a)$ the vascular bundles are conjoint,scattered,and surrounded by sclerenchymatous bundle sheaths,$(b)$ phloem parenchyma is absent. What will you identify it as?

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

The ring arrangement of vascular bundles is the characteristic feature of

Conjoint,collateral and closed vascular bundle is found in