A. Rhizobium and leguminous plants
B. Marchantia sporophyte and gametophyte
C. Algae and fungi in a lichen
D. Mycorrhizal fungi and tree roots
A. Rhizobium and leguminous plants
B. Marchantia sporophyte and gametophyte
C. Algae and fungi in a lichen
D. Mycorrhizal fungi and tree roots