Medullary rays are seen in

Conjoint, collateral and closed vascular bundle is found in

Describe internal structure of (sunflower stem) of young stem of dicot plant.

The vascular bundles in the stem of monocots are typically

Identify figure :

The transverse section of a plant shows following anatomical features:

$(a)$ Large number of scattered vascular bundles surrounded by bundle sheath.

$(b)$ Large conspicuous parenchymatous ground tissue.

$(c)$ Vascular bundles conjoint and closed.

$(d)$ Phloem parenchyma absent. Identify the category of plant and its part