AP BIOLOGY

Detailed explanation-1: -What is External Fertilization? Fertilization that occurs outside the body of an organism is known as external fertilization. It usually requires a water body for successful fertilization. The sperms and eggs are released in an external environment.

Detailed explanation-2: -External fertilization is the process in which the fusion of the male and the female gamete takes place outside the female body in an external medium, generally water. Fish, frog, starfish are some organisms that exhibit external fertilization.

Detailed explanation-3: -External fertilisation can occur both in water and on land.

Detailed explanation-4: -External fertilization in animals usually occurs in water or in damp areas in a process called spawning. Moisture in the environment keeps the gametes from drying out. Moisture is also important so the eggs and sperm can move around freely, which lets them meet and fuse.

Detailed explanation-5: -Mention Some External Fertilization Examples Descriptive external fertilization examples are that of salmon, trout fish, and codfish. Both the female and male release their eggs and sperms respectively into the water where they diffuse and fertilize.