9. How is the mycorrhizal association helpful in absorption of water and minerals in plants?
Mycorrhiza refers to the symbiotic association of fungi with the root systems of higher plants. The hyphae of fungi form a dense network around the young roots and they can even penetrate the cells of the roots. The mycorrhizal hyphae help the plants get nutrients, especially phosphorus. Due, to this reason, the mycorrhizal association is obligated in some plants. For example, Pinus seeds don't germinate and establish in the absence of mycorrhizal associations.