Rice.jpgRice was domesticated in china in 5,000 B.C. Rice was first domesticated in the region of the Yangtee/Chang RiverValley. It was domesticated in china. Rice does not grow in the Northern China. The chinese domesticated it. They began farming it and they used it for food. Rice is the seed of a monocot plant oreyza sativa. Rice is normally grow as an annual plant.