Which of these is not a step in the formation of an embryo from a zygote in the seed?

A) Cells differentiate to form the basic plant tissue types.
B) Mitosis produces a mass of cells that become the young embryo.
C) The root and shoot systems emerge from the seed.
D) Basal cells form a connection between the parent plant and the developing embryo.
E) The early root- shoot axis is formed.