Monday, March 10, 2008
The portion of the germinating seed which grows and descend deep into the soil is called ROOT.They usually originate from the emerging radicle of a germinating seed but ADVENTITIOUS ROOTS originate from the other parts of plant like stem and leaf.They are of two types viz. Tap root system and Adventitious root system.
Tap root system:
The root system consisting of the main primary root and secondary roots.eg-pea,mustard,mango.
Adventitious root system:
The root system where radicle does not develop and replaced by a number of minute thread like roots arising from EPICOTYL.eg-Fibrous root-grass , Cauline root-Banyan and Foliar root-Bignonia.