Final answer:
Shallow roots provide increased stability to tropical trees growing in shallow soil by anchoring the tree and absorbing water from the upper layers of soil.
Step-by-step explanation:
A shallow fibrous system can help anchor tropical trees growing in shallow soil and provide increased stability. These shallow roots spread out close to the surface of the soil, forming a dense network, which helps to prevent the tree from being easily uprooted. Additionally, the shallow roots can absorb water from the upper layers of soil, where rainwater accumulates after heavy rainfall. This allows the tree to access water even in a shallow soil environment.