Roots of which of these plants contain a pigment which creates an anaerobic condition for a specific enzyme to function?

Step-by-step solution

Leghaemoglobin is a pink pigment found in the root nodules of leguminous plant where Rhizobium is present. It fuctions as oxygen scavenger and creates an anaerobic condition for nitrogenase enzyme to function. Soyabean is a legume plant so it contains leghaemoglobin in its root nodules.