How do the seeds of one or dicotyledonous plants differ from each other?

Monocots are plants in the embryo of the seed of which there is one cotyledon.
Their main differences:
1) Fibrous root. (the root looks like a hair. Many many small roots from one stem or bulb)
2) The leaves are separated by small arcs parallel to the outline of the leaf.
3) The number of petals on a flower is a multiple of 3.
Dicotyledons are plants with two cotyledons in the seed.
Their main differences:
1) Rod root (small ones diverge from one large root, but there are not many of them. For example: carrots)
2) Mesh leaves.
3) The number of petals on a flower is four or five.