Difference between Tap root system and Fibrous root system

  The root is typically a non-green, underground, descending portion of the plant axis that gives rise to similar types of endogenous lateral branches and does not possess nodes and internodes. They are positively geotropic, positively hydrotropic, and negatively phototropic. 

There are three types of root systems occurring in plants: tap root system, fibrous root system, and adventitious root system. 

•  Tap root system

1.It is formed from the radicle of the embryo

2. It is always underground.

3.It consists of a single primary (main) root.

4. Primary roots produces distinct secondary roots, tertiary roots, and rootlets in acropetal succession.

5. It may be surface or deep feeder, the deep feeder being the usual feature. 

6.It is commonly found in dicots (Example: Mustard).

• Fibrous Root System

1. It is formed in place of the tap root at the base of the main stem.

2. It is always underground.

3. Primary root is short lived. Instead underground root arise in groups from base of stem.

4. The main roots are equal length and give off small branches. Main roots and their branches are thin and thread like.

5.It is usually surface feeder

6. It is commonly found in monocots (Example: Wheat)