Q. Consider the following statements about mycorrhizae:

1. They represent a symbiotic association between fungi and roots of higher plants.
2. Mycorrhizae increase absorption of phosphorus by plants.
3. They are used as biofertilizers in forestry.

Which of the above statements is / are correct?
Answer: 1, 2 and 3
Notes: All three statements are correct. Mycorrhizae are mutualistic partnerships between fungi and plant roots, which improve the plant's absorption of mineral nutrients, especially phosphorus. They also play an important role as biofertilizers in forestry by enhancing seedling growth and providing protection against soil pathogens.