You can buy mycorrhizal fungus to add to soil when you plant trees and other plants. Why would you want to do this?

• A. Mycorrhizal fungi prey on nematodes in the soil.
• B. Mycorrhizal fungi produce carbohydrates needed by plants.
• C. Mycorrhizal fungi prevent transposons from accumulating in plant cells.
• D. Mycorrhizal fungi live in plant leaves and produce toxins that discourage herbivores.
• E. Mycorrhizal fungi assist plants in the absorption of essential nutrients.