A legume is a type of plant that belongs to the family Fabaceae. These plants are known for their unique ability to fix nitrogen in the soil, thanks to a symbiotic relationship with certain bacteria. Common examples of legumes include beans, lentils, and peas. They are often grown for their edible seeds, which are rich in protein and fiber. Legumes play an important role in agriculture and sustainability. They can improve soil health by replenishing nitrogen levels, reducing the need for chemical fertilizers. Additionally, legumes are a staple food in many cultures and are valued for their nutritional benefits, making them a key component of a balanced diet.