How is a zygote different from an embryo?

Ovum is mainly 1n and zygote formed by fusion of ovum and sperm is 2n ,,,

the zygote called an embryo whe the fertilized egg start to developed to many cells and became multicellular

yes, the zygote does become an embryo when it enters the womb. though insted of just floating in the womb it embeds itelf in the wall of the womb.

An embryo is a multicellular diploid eukaryote in its earliest stage of development. At the end of the 8th week in humans, the embryonic stage is over, and the fetal stage begins.

During a process called fertilization, an egg is penetrated by a sperm cell, and the haploid genetic information of both male and female gametes combines. The result of this process is a diploid cell...