Answer-Vascular – arbuscular mycorrhiza (VAM) is known for;

Vascular-arbuscular mycorrhiza VAM, also known as arbuscular mycorrhiza AM, is a type of mutualistic symbiotic association between certain fungi and the roots of most vascular plants. This symbiosis occurs in the rhizosphere the soil region influenced by plant roots and is characterized by the formation of specialized structures called arbuscules within the root cells.