What is the function of the hypodermis?

$A$ student observed the $T.S.$ of a plant organ slide under a microscope. He observed the vascular bundles in the stelar region as conjoint,collateral,and open. Based on these features of the vascular bundle,identify the correct option from below.

What is the term for a stele that contains numerous scattered vascular bundles?

Two cross-sections of stem and root appear simple,when viewed by the naked eye. But under a microscope,they can be differentiated by:

The innermost layer of the cortex,which is also known as the starch sheath,is:

Describe the internal structure of a young dicot stem (e.g.,sunflower).