The root nodules of leguminous plants like gram,pulses,etc. contain nitrogen-fixing bacteria,rhizobia, which help in fixing nitrogen in the soil for the plants to absorb.Nitrogen is essential for the growth of plants.
it is rhizobium
nitrogen fixation
The root nodules. they fix the bacteria in the soil so it's the most sensible place!
Legumes have nirtifying bacteria in their roots, but mostly they are found in the soil.
Plant parts are swollen in many cases due to storage of food. In some aquatic plants, some plant parts like leaf petiole are swollen due to air chambers so that these plants can float in water.
its the nutrients in the plants OJ :)poop
It contains bacteria that fix nitrogen in the soil. This provides this vital element not only for the legume but also other plants in the vicinity
yes,there are root nodules
Root nodules are swollen structures present present in roots of leguminous plant which belong to family Fabaceae e.g. Pisum sativum , Medicago , Arachis . This family is the second largest family of Dicots and second most important family from economic point of view.These root nodules are formed by Bacteria named Rhizobium. These Bacteria are nitrogen fixing bacteria i.e. they trap N2 from air and convert it into NO3 which is used as fertilizer by plants. There is symbiotic relation between legume roots and N2 fixing Bacteria .They increase soil fertility .
They live in the root nodules of leguminous [pea] Plants, and they perform the crucial function of taking inorganic N2 [from Our Atmosphere] and transforming that into biologically useful NO2!
Bacteria that exist in the root nodules of some plants can absorb nitrogen from the air in the soil. One notable example is the Rhizobia that lives in nodules on soybean roots. Similar root systems exist in clover and alfalfa.
Root nodules with bacteria are found fairly easily on legumes like beans, peas, clover, soy and peanut as well as on alder trees. Some plants have scarce nodule development and others have dense clusters.