AP BIOLOGY

Detailed explanation-1: -Internal fertilization is the union of an egg and sperm cell during sexual reproduction inside the female body. Internal fertilization, unlike its counterpart, external fertilization, brings more control to the female with reproduction.

Detailed explanation-2: -Internal fertilisation occurs inside the female body. The male gamete enters the female body and fuses with the egg in the female body itself.

Detailed explanation-3: -Sexual reproduction starts with the combination of a sperm and an egg in a process called fertilization. This can occur either inside (internal fertilization) or outside (external fertilization) the body of the female. Humans provide an example of the former whereas seahorse reproduction is an example of the latter.