exam 3 Flashcards
1
Q
how much of the soil biomass is mycorrhizae?
A
50%
2
Q
what percentage of trees have mycorrhizae
A
angiosperm 80
conifer 100
3
Q
two kinds of mycorrhizae
A
ectomycorrhizae
arbuscular mycorrhizae
4
Q
ectomycorrhizae
A
forms a mat around the exterior of the root
ex. alder, chestnut, pine, spruce, aspen, hickory
important in N limited soil
5
Q
arbuscular mycorrizhae
A
inside cortical cells
abundant in phosphorous limited soil
6
Q
funugi deman on tree?
A
1/3 of trees total food production
