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
acacia is a taproot
taproot
Grass typically does not have a taproot system. Instead, it has a fibrous root system that spreads out horizontally close to the soil surface.
A taproot system is a type of root system found in some plants where the primary root, known as the taproot, grows deep into the soil and gives rise to lateral roots. This system is common in dicotyledonous plants and allows for efficient absorption of water and nutrients from deep in the soil. Examples of plants with taproot systems include carrots, radishes, and oak trees.
false
taproot
The carrot plant's root system is a taproot
There are two types of root systems. taproot system and the fibrous root system.
taproot
The lily has a taproot system. The taproot goes straight down as it grows and smaller roots shoot off the sides and grow outward.
Taproot system