I think you are refering to a taproot coming from the center of the root structure this is the main root for tree to live
Taproot system
The taproot system is one single main root, unlike the fibrous root system which contains many small roots. An example of the taproot system would be a carrot.
acacia is a taproot
taproot
taproot
taproot
false
No
The carrot plant's root system is a taproot
taproot
taproot system
taproot