Legumes incorporate nitrogen gas into their proteins because
Answer Details
Legumes incorporate nitrogen gas into their proteins because they possess root nodules containing Rhizobium bacteria. Rhizobium bacteria, which form a symbiotic relationship with legumes, can convert nitrogen gas (N2) in the atmosphere into a form of nitrogen that can be utilized by the plant. This form of nitrogen is converted into ammonia, which is then utilized by the plant to produce proteins. Therefore, the presence of Rhizobium in legume root nodules is responsible for their ability to fix nitrogen and produce high protein yields.