Many trees obtain nutrients from ___, a rich network of fungal mycelia surrounding their roots.?

Answer 1

Ectomycorrhiza (EM) is the symbiont of many forest trees. The symbiotic partners of EM are woody plants and Asco- and Basidiomycota. They form a Hartig net proliferating in the intercellular spaces or the tree roots. The fungi often surround the individual root tips with a hyphal mantle.

Answer 2

Mycorrhizal fungi.

"myco" means "fungus"

"rhizae" means "root"

The symbiotic unit is called "mycorrhizae". There are ectomycorrhizae and endomycorrhizae, which are differentiated based on how the fungus interacts with the root anatomy.