Select the correct option for the given figure.

$A$ transverse section of a plant part shows the following characteristics:
$(a)$ Numerous,scattered vascular bundles,each surrounded by a bundle sheath.
$(b)$ $A$ large,conspicuous parenchymatous ground tissue.
$(c)$ Conjoint and closed vascular bundles.
$(d)$ Absence of phloem parenchyma.
Identify the type of plant and the part:

Which layer in dicot stem is rich in starch grains?

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

Cortex and pith are not distinguished in

In monocot stem,which of the following is absent?