Question

Write short notes on the cortex in dicot stem.

Answer 1

Those plants whose seed contains two cotyledon or embryonic leaf is known as dicotyledon or simply dicot. In this section, you will learn about characteristics

Characteristics of Dicot Stem
Typical dicot stem show following characteristics:

Presence of well-defined epidermis with cuticle and multicellular stem hairs.
Cortex has collenchymatous hypodermis regularly or as discontinuous patches.
Endodermis is distinct as the innermost layer of the cortex.
Pericycle composed of parenchyma and sclerenchyma alternately as irregular patches (heterogenous).
Vascular bundles are conjoint, collateral, endarch, open and arranged in a ring surrounding pith (eustele).
The center of pith is made from thin walled parenchyma cells with distinct intercellular spaces. Pith rays or medullary rays are found as separator of two vascular bundles.