Sclerenchymatous sheath is present in vascular bundles of:

In which of the following is phloem parenchyma absent?

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 :

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

In which of the following are lysigenous cavities and $Y$-shaped xylem found?

Bicollateral vascular bundles are found in .......