Question

The root system that most big trees have and are difficult to uproot

Answer 1

A taproot is a large, central, and dominant root from which other roots sprout laterally. Typically a taproot is somewhat straight and very thick, is tapering in shape, and grows directly downward.[1] In some plants, such as the carrot, the taproot is a storage organ so well developed that it has been cultivated as a vegetable.