Why do you think the zygote is dormant for sometime in a fertilized ovule?
The zygote is formed by the fusion of the male gamete with the nucleus of the
egg cell. The zygote remains dormant for some time and waits for the endosperm
to form, which develops from the primary endosperm cell resulting from triple
fusion. The endosperm provides food for the growing embryo and after the
formation of the endosperm, further development of the embryo from the zygote