Question

What is the meaning of internal fertilization and external fertilization explain with example?

Answer 1

Internal fertilisation is in which fusion of male and female gametes take place inside female
body.
example---fertilisation that occur in humans,fertilisation occurs in birds,etc
External fertilisation is in which fusion take place outside female body.
example---fertilisation occur in frogs,etc

Answer 2

Fertilization is the process by which a sperm cell and an egg cell unite to form a completely new individual.

The difference between internal and external fertilization is that internal fertilization occurs inside the body, whereas external fertilization happens outside the body.