Fertilization is the process in which the male and female gametes fuse to form a zygote.
Fertilization could be external and Internal.
External Fertilization – In this type of fertilization, the two gametes fuse outside the female body in a medium.
Organisms showing External fertilization are – Frogs, Fish etc.
Disadvantages of External Fertilization –
There is a low chance of fusion of the gametes.
Low survival rate of the offspring due to absence of proper parental care.
Final Answer :
Fertilization which takes place outside the female body is called External Fertilization.