Multiple ChoiceWhy do plants require assistance in converting atmospheric \(\mathrm{N_2}\) into a usable form, and which organisms typically provide this help?70views
Multiple ChoiceWhich organisms are most critical in the nitrogen cycle due to their ability to fix atmospheric nitrogen?99views
Multiple ChoiceWhich of the following plants is a legume (a member of the family Fabaceae) commonly associated with symbiotic nitrogen fixation?1views
Multiple ChoiceWhich of the following pathways indicates how nitrogen is added to the largest nitrogen reservoir (the atmosphere)?56views
Multiple ChoiceNitrogen gas (\(N_2\)) becomes converted into biologically usable chemical forms by what type of organism?66views
Multiple ChoiceIn the context of nitrogen fixation, what role do lichens play in helping to create soil during primary succession?326views
Multiple ChoiceHow might the nitrogen cycle change if nitrogen-fixing bacteria and archaea went extinct?40views