BiologyMediumHigh School (11–12)Biology in Human Welfare › Microbes in Human WelfareA-LevelIBAP EAPCETBCECECUET UGGUJCET
Created by StemPy LabWhich pair is made up of free-living bacteria that enrich the nitrogen content of the soil?
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← The roots of a soyabean plant carry round swellings. A nitrogen fixing partner of the plant lives inside them. To which genus does the partner belong?A sugarcane estate covers 12 hectares. The *Azotobacter* in its soil supplies 30 kg of nitrogen for each hectare. Urea contains 46 per cent nitrogen by mass. What mass of urea would the estate have had to buy to get the same nitrogen? →
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