The leaves of monocotyledons are basic. When flowering, there will be cauline leaves and one cotyledon. There are usually long petioles with sheath like and dehiscent bases and parallel main veins and leaf margins. The leaves of dicotyledons have two leaflets and reticulate veins.
The flowers of monocotyledons are bisexual or unisexual, with a base of three and six perianth segments arranged in two rounds. Calyx and corolla are similar. The cardinality of dicotyledons is usually five or four, there is no three cardinality, the shape of calyx and corolla is totally different.
The main root of monocotyledons is generally undeveloped. It is a fibrous root formed by many adventitious roots, and there is no direct root. The main root of dicotyledons is generally developed, and most of them are direct roots.
