Embryonic development includes all of the following except
a. organogenesis.
b. fertilization.
c. gastrulation.
d. cleavage.
e. growth.

The answer is (b.) fertilization

The fertilization is the stage where the egg cell or the so-called ovum fused with the sperm cell which eventually leads the development of the embryo or the zygote. The Embryogenesis starts when the zygote undergoes mitotic divisions or also known cleavage process.

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