Question

Write the anatomical difference between dicot stem and monocot stem.

Answer 1

The dicot stems have a well defined epidermis with cuticle also a layer of the dermis along with multicellular stem hair. The internal structure of a dicot stem mainly consists of the epidermis, hypodermis, cortex endodermis, and pith.
The monocot stems are a circular shaped stem with lateral branches and are bounded with a layer of the dermis.

Step by step answer: The dicot and monocot stems possess different qualities from each other.
The main difference between them is as follows:

Sr.no.	Dicot stems	Sr.no.	Monocot stems
1	The vascular bundles are less in number in the dicot stem.	1	The vascular bundles present in the monocot stem are more in number.
2	Mostly the dicot stems are of solid structure.	2	Usually the monocot stems are hollow at the centre.
3	The phloem parenchyma can be found in this.	3	The phloem parenchyma is absent here.
4	These contain the trichomes.	4	The trichomes are absent here.
5	The epidermal hair may be present here.	5	The epidermal hair is present here for sure.
6	These can have the secondary growth.	6	There is no secondary growth here.
7	The vessels are present here are of a polygonal shape.	7	The vessels here are rounded or may be of oval shape.

Note: The monocot stems have their vascular bundles near the outer edge of the stem. The bundles are surrounded by the large parenchyma in the cortex region. The pith region is absent in monocots.
The dicot stem has vascular bundles arranged in a ring-like structure. This contains the pith situated at the core of the stem. Each of the vascular bundles contains the xylem and phloem which are separated by a substance known as the vascular cambium.