Root nodules are found in

Root nodules are found in some leguminous plants and also in some other plants. In leguminous plants, such as peas, beans, and lentils, root nodules form a symbiotic relationship with nitrogen-fixing bacteria like Rhizobium. These bacteria convert atmospheric nitrogen into ammonia, which is then used by the plant for growth. This mutualistic relationship enhances soil fertility and supports agricultural productivity. Besides legumes, a few other plants, such as some species of alder and actinorhizal plants, also form root nodules with different types of nitrogen-fixing bacteria like Frankia. These nodules play a similar role in nitrogen fixation, contributing to the nitrogen cycle and improving soil quality. Root nodules are essential for sustainable farming practices and ecosystem health by providing a natural source of nitrogen to plants.