Answer
Plant–parasite, plant–fungus, and plant–bacteria associations all require the exchange of signals between the symbionts. The plant–fungus and plant–bacteria relationships involve sending signals to coordinate the mutualistic exchange of nutrients, but the plant–parasite interactions are formed at the expense of the plant.
Work Step by Step
Plant–parasite, plant–fungus, and plant–bacteria associations all require the exchange of signals between the symbionts. The plant–fungus and plant–bacteria relationships involve sending signals to coordinate the mutualistic exchange of nutrients, but the plant–parasite interactions are formed at the expense of the plant.