Morphology of Root System

 

ROOTS

"The cylindrical plant organ that does not bear buds or leaves, tends to grow towards gravity and away from the light is called root.”

Roots are of Two Major Types on the basis of Origin or Development:

→ Tap Roots

→ Adventitious Roots

 Tap Roots

The root developed from the radicle of embryo and become thicker than its branches is known as Tap Root. e.g, Wheat, Carrot, Radish etc.

Field of Wheat

Adventitious Roots

The root developed from stem or leaves is called adventitious roots.e.g  Rose, Sugar Cane etc. 

Rose (Rosa Indica)

Types of Tap Root

i- Fibrous Root 

ii- Tuberous Root 

Fibrous Root 

If Primary root is not much thicker than Secondary root, then it is Fibrous root.

Tuberous Root

Tap root become thick or swollen due to reserve food material are 

known as tuberous tap roots.