44. Biofertilizers convert nitrogen to ________ . A.Nitrates B.Ammonia C.Nitrogenase D.Amino acids
Answer: Option B Solution: Bio-fertilizers are micro-organisms which bring about nutrient enrichment of soil by enhancing the availability of nutrients to crops. The micro-organisms which act as bio-fertilizers are bacteria, cyanobacteria (blue green algae) and mycorrhizal fungi. The symbiotic nitrogen-fixing bacteria convert free nitrogen to ammonia, which the host plant utilizes for its development.
