AP BIOLOGY

Detailed explanation-1: -The correct option is C fertilisation. The process of fusion of male and female gametes is called fertilisation. It results in the formation of zygote. The zygote develops to form an embryo.

Detailed explanation-2: -The fusion of male and female gamete is known as fertilization. The male gamete is known as sperm and the female gamete is known as ovum. The sperm and ovum fuses to form zygote.

Detailed explanation-3: -Egg and sperm cells have just 23 chromosomes each. That’s half as many chromosomes as regular cells. Through the process of fertilization, egg and sperm join to make a cell with 46 chromosomes (23 pairs), called a zygote.

Detailed explanation-4: -Fertilisation: The fusion of a haploid male gamete (spermatozoa) and a haploid female gamete (ovum) to form a diploid cell, the zygote, is called fertilization.

Detailed explanation-5: -Fertilization by a sperm activates the ovum, which takes place in the distal third of the fallopian tube. Once the sperm has entered the ovum, immediate changes take place not to allow further penetration of the ovum. These exact changes are in the biochemical section of this article.