Flowering plants that place their seeds in fruits. The monocots have an embryo with a single cotyledon (seed leaf), three-part flowers, parallel leaf veins, and adventitious root growth. Dicots have two cotyledons, four- or five-part flowers, and net leaf vein patterns. Monocots include grasses, orchids, palms, and cattails, and dicots include oaks, sycamores, and maples. Compare gymnosperms.