Question

Calcium: ca.: Potasium: ?
Algae: fungi:
Legumin
noeus
plant:?​

Answer 1

Calcium:ca::Potassium:k

Algae:fungi::Leguminnoeus plants:rhizobia

Rhizobia are diazotrophic bacteria that fix nitrogen after becoming established inside the root nodules of legumes (Fabaceae). To express genes for nitrogen fixation, rhizobia require a plant host; they cannot independently fix nitrogen. In general, they are gram negative, motile, non-sporulating rods.