Final Answer:
Mycorrhizal fungi benefit from their partnership with plants by receiving organic compounds, such as sugars, from the plant host.
Step-by-step explanation:
In a mycorrhizal association, mycorrhizal fungi form a symbiotic relationship with plant roots. The fungi extend their hyphae into the soil, effectively increasing the root's absorptive surface area. In return for providing essential nutrients like phosphorus and nitrogen to the plant, the fungi receive organic compounds produced by the plant through photosynthesis. These compounds, mainly sugars, serve as an energy source for the fungi.
This mutualistic partnership enhances nutrient uptake for the plant, particularly in nutrient-poor soils, and contributes to the overall health and growth of both the plant and the mycorrhizal fungi. The relationship is an excellent example of mutualistic symbiosis, benefiting both partners in the exchange of nutrients and energy.