Common Beans, Soybeans, and Peanuts are all leguminous plants that form symbiotic relationships with nitrogen-fixing bacteria in their root nodules. Oats (Avena sativa) are a cereal grain and a member of the grass family (Poaceae). Grasses generally do not form the classic root nodules with Rhizobium and do not perform symbiotic nitrogen fixation in the same manner as legumes.
More than 90 percent of all nitrogen are fixed as ammonia, nitrites, and nitrates by soil microorganisms. Symbiotic bacteria associated with leguminous plants fix nitrogen by the formation of root nodules. In which of the following plant nitrogen fixation does not occurs?
Asked in OPSC CS Prelims 2022 · Topic: Plant Nutrition (Symbiotic Nitrogen Fixation: Nodule formation and biochemistry)
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