Difference Between Dicot and Monocot Root: Anatomy, Features and Classification

The key difference between dicot and monocot roots starts with something you might have already noticed in plants around you. And why do some plants grow thin, hair-like roots that spread widely, while others develop one thick main root that goes deep into the soil? The answer lies in the seed's structure and whether the plant is a monocot or a dicot. This article clearly explains the differences between dicot and monocot roots, their structures, and how each root type helps plants grow, adapt, and survive.

Table of Contents

• What are Monocots and Dicots Roots
• Key Difference Between Dicot and Monocot Roots: Key Comparisons

What are Monocots and Dicots Roots?

Have you noticed that some plants have lots of thin roots while others have one thick root going down? 

This difference starts with the seed. Flowering plants, or angiosperms, are divided into monocots and dicots based on the number of cotyledons (seed leaves). Monocots have one, and dicots have two. This small difference between monocot and dicot roots affects the whole plant, especially its roots.

So, how do their roots grow differently?

Let’s discuss.

Monocots like maize, wheat, and grass have a fibrous root system. Many thin roots grow from the base of the stem, forming a network that keeps the plant stable and absorbs nutrients from the topsoil. 

These roots have a large pith, many vascular bundles, round xylem vessels, and do not get thicker over time.

Also Read: Diagram of Stomata

On the other hand, dicots like peas, beans, and carrots have a taproot system. One main thick root grows deep into the soil, with smaller side roots branching out. 

It is interesting to note that this helps the plant reach water and nutrients from deeper layers. 

And dicot roots have fewer vascular bundles, a small or no pith, angular xylem, and grow thicker over time through secondary growth.

So, next time you look at a plant, ask yourself: Does it spread shallow like a monocot or grow deep like a dicot? 

Monocots spread wide and stay shallow; dicots grow deep and strong, each suited perfectly to its environment.

Also Read: What is Photosynthesis

Key Difference Between Dicot and Monocot Roots

And here’s a simple comparison table that highlights what is the difference between dicot and monocot roots:

Feature	Dicot Root	Monocot Root
Type of Root System	Taproot system	Fibrous root system
Number of Xylem and Phloem	2 to 8	8 or more
Shape of Xylem	Angular or polygonal	Round or oval
Pith	Absent or small	Large and well-developed
Conjunctive Tissue	Parenchymatous	Sclerenchymatous
Pericycle Function	Forms cork cambium, vascular cambium, and lateral roots	Forms lateral roots only
Cambium	Present	Absent
Secondary Growth	Occurs	Does not occur
Cortex	Narrow	Wide
Covering	Cork in older roots	Exodermis in older roots
Examples	Pea, beans, peanuts	Maize, banana, palm

Till now, we have discussed the difference between dicot and monocot roots, showing how plants adapt to their environment.  Monocot roots form a fibrous network for shallow nutrient absorption, while dicot roots grow deep taproots for strong anchorage and access to deeper water and nutrients. Each type supports the plant’s growth and survival in its own way.