Question

Ectomycorrhiza is an association of ______.

Options

• bacteria and plant roots

• cyanobacteria and plant roots

• fungi and plant roots

• bacteria and fungi

Answer 1

Ectomycorrhiza is an association of fungi and plant roots.

Explanation:

Ectomycorrhiza is a symbiotic association in which fungi form a sheath around the roots of trees such as pine and oak. Bacteria, cyanobacteria and fungi are not involved in the other options as partners of roots in this way.