Syngamy and fertilization are synonyms just the diffrerence between them is that syngamy is the process of fusion of two gametes to form zygote while fertilisation refers to the act or process of rendering fertile.

Why fertilization is also called syngamy?

A diploid zygote is formed when one of the sperm cells fertilizes one of the egg cells. An embryo now develops from this diploid zygote. The fusion of the cells in such a scenario is called syngamy. It can be noted that syngamy is also referred to as true fusion and generative fertilisation.

What is difference between syngamy and zygote?

As nouns the difference between zygote and syngamy

is that zygote is a fertilized egg cell while syngamy is the fusion of two gametes to form a zygote.