Intraxyllary phloem may also be called

The transverse section of a plant material shows the following anatomical features under microscope $:-$
$(a)$ Collenchymatous hypodermis
$(b)$ Sclerenchymatous pericycle located just above phloem bundles in semi-lunar patches.
$(c)$ Vascular bundles are arranged in a ring.
$(d)$ Vascular bundles are conjoint & open.
Plant material should be :

Which layer in dicot stem is rich in starch grains?

Which of the following is not true for a monocot stem?

Starch sheath and bundle cap are found in the internal structure of:

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