A mutation in a legume plant prevents the formation of infection threads during rhizobial symbiosis. Which of the following processes would be MOST directly affected?

The pink color inside a root nodule is due to the presence of:

Which of the following is the initial nitrogenous compound produced during nitrogen fixation in the root nodules of legumes?

The function of leghaemoglobin during biological nitrogen fixation in root nodules of legumes is to

What is the primary benefit for leguminous plants in forming root nodules with nitrogen-fixing bacteria?

A researcher observes that a particular legume mutant forms nodules, but these nodules fail to fix nitrogen. Which of the following gene mutations is MOST likely responsible?

The primary product of the nitrogenase-catalyzed reaction in the root nodules of leguminous plants is:

The symbiotic relationship between legumes and rhizobia is an example of:

Leg haemoglobin acts as?

In the symbiotic relationship between leguminous plants and nitrogen-fixing bacteria, what is the primary product formed within the root nodules?

$\alpha -$ ketoglutaric acid {\rm{ + N}}{{\rm{H}}_{\rm{4}}} + NADPH\xrightarrow{{'A'}}{\rm{glutamate}} + {{\rm{H}}_{\rm{2}}}{\rm{O}} + NADP\,\,'A'\,{\rm{stand}}\,{\rm{for}}\,{\rm{?}}