What is the difference between a rhizoid and a root?

The root is a vegetative organ in higher plants that performs a number of very important functions for the plant. It is located in the soil layer and with its help passes nutrition, excretion, reproduction, and also with its help the plant is kept in the soil. Rhizoids are filamentous outgrowths that replace the root in lower plants (fungi, lichens, etc.). The root is more complex in structure, and has tissue differentiation, in contrast to rhizoids. The root has more functions than the rhizoids.