What groups are flowering plants divided into, depending on the number of cotyledons in the embryo?

By the number of cotyledons in the embryo, flowering plants are divided into two classes. This is a class of monocots and a class of dicots. Monocots have one cotyledon in the embryo, dicotyledons – two. In addition to the number of cotyledons, monocotyledons and dicotyledons also differ in other characteristics (structure of the root system, leaf venation, number of sepals, presence of cambium in the stem).
Monocotyledons include about 60 thousand plant species. Representatives of this group are cereals (rye, wheat), lily and other species.
The dicotyledonous class includes such species as legumes (peas), crucifers (rape, cabbage) and others. In total, the dicotyledonous class has more than 180 thousand plant species.