Discover the crucial role of mycorrhizal associations in agriculture, enhancing plant nutrition and soil health. This quiz will introduce you to basic facts and concepts about mycorrhizae and their applications.
What are mycorrhizae in the context of agriculture?
Explanation: Mycorrhizae are fungi that form mutualistic associations with plant roots, enhancing nutrient uptake. They are not insects (option B), bacteria (option C), or just an additive (option D); only option A correctly describes their biological role.
Which essential plant nutrient do mycorrhizal associations most commonly help plants absorb more efficiently from the soil?
Explanation: Mycorrhizae are especially well known for improving phosphorus uptake, which can be limiting in many soils. Although they may assist with other nutrients, their effect is most pronounced with phosphorus; iron, calcium, and potassium uptake are generally less affected.
Which type of mycorrhizal association is most common in agricultural crops like wheat and corn?
Explanation: Arbuscular mycorrhizae are the predominant form found in major agricultural crops. Ectomycorrhizae are typical of many trees, while ericoid and orchid mycorrhizae are specialized for plants like heather and orchids, respectively.
How can mycorrhizal fungi contribute to sustainable farming practices?
Explanation: Mycorrhizal associations enhance nutrient uptake, which can decrease reliance on synthetic fertilizers. They do not directly attract pollinators (option B), increase herbicide resistance (option C), or cause diseases (option D).
In stressful conditions like drought, how do mycorrhizal fungi help plants?
Explanation: Mycorrhizal fungi increase the effective root surface area, aiding water uptake during drought. They do not create rain (option B), photosynthesize (option C), or completely remove all soil pathogens (option D); only option A is accurate.