Write short notes on Modifications of roots.
Answers
Roots are modified into different forms to perform specific functions other than their normal functions. Modification in roots is found in both tap root system and adventitious root system.
Modification in root occurs when there occurs a permanent change in the structure of the root system. This change in structure of the tap root or the adventitious root system is for carry out certain specific functions additional to anchorage and absorption. The change in the structure of the roots is for adaptation to their surrounding environment.
Tap Root Modifications
Tap roots are modified in to different structures, these modified structures carry out specific functions like food storage. Such roots are referred to as modified tap roots. They are different types of modified tap roots like Fusiform, Napiform, Conical, Tuberous or tubercular roots, pneumatophores.
Fusiform : Fusiform is a modified tap root. The primary root of the system is swollen at the middle and tapers gradually at both the ends forming a spindle shaped structure. Example of fusiform roots is radish.