What is mycorrhiza in biology?

Mycorrhiza is a symbiosis of fungi and plant roots. Both organisms benefit from coexistence, which cannot live without each other. The mycelium of the fungus is closely able to braid the roots of the plant and sometimes even grow into it. Mushrooms break down organic substances that are in the soil, help to assimilate minerals, and produce compounds that help the plant grow better. Plants provide the fungus with carbohydrates, which are absorbed from the root. Mycorrhiza is necessary for many plants; without fungi, they grow poorly, and are more susceptible to disease. Examples of mycorrhiza: aspen and aspen, birch and boletus.