As much as 90% of forest trees require mycorrhizae for growth, suggesting that:
A) forest soils are rich in phosphorous
B) mycorrhizae are found everywhere
C) the plant-mycorrhizal association is ammensalic
D) mycorrhizae significantly increase the uptake of nutrients
E) forest trees do not have deep roots

Question

Quizplus · Accepted Answer

The fact that 90% of forest trees require mycorrhizae for growth suggests that mycorrhizae significantly increase the uptake of nutrients. Mycorrhizae form a mutualistic association with plant roots, where they provide the plant with increased access to nutrients such as phosphorous, nitrogen, and water in exchange for carbohydrates produced by the plant through photosynthesis. This symbiotic relationship is beneficial for both the plant and the mycorrhizal fungi.

As Much as 90% of Forest Trees Require Mycorrhizae for Growth