Question

what agricultural advantage is mentioned in the video when farmers encourage mycorrhizal fungi?
a. it allows crops to grow without any water
b. it increases cost by requiring more chemical fertilizers
c. it can reduce the need for chemical fertilizers and lower environmental impact
d. it guarantees pest - free crops without any other management

Explanation:

Mycorrhizal fungi form symbiotic relationships with plant roots, enhancing the plant's ability to absorb nutrients and water from the soil. This reduces the reliance on chemical fertilizers, which in turn lessens environmental harm from fertilizer runoff and overuse. Option A is incorrect because crops still need water. Option B is wrong as it reduces, not increases, costs by cutting fertilizer needs. Option D is incorrect because mycorrhizae do not guarantee pest-free crops without other management.

Answer:

C. It can reduce the need for chemical fertilizers and lower environmental impact