AP BIOLOGY

Detailed explanation-1: -In frogs, fertilization takes place in the water where they live. Since fertilisation takes place outside the female body, it is external fertilisation.

Detailed explanation-2: -Amphibians reproduce sexually with either external or internal fertilization. Amphibians may attract mates with calls or scents. Amphibians do not produce amniotic eggs, so they must reproduce in water. Amphibian larvae go through metamorphosis to change into the adult form.

Detailed explanation-3: -Most aquatic organisms that reproduce sexually use this method of fertilization. Because it happens outside of the body, we call this “external fertilization”. External fertilization in animals usually occurs in water or in damp areas in a process called spawning.

Detailed explanation-4: -External fertilization is characterized by the release of both sperm and eggs into an external environment; sperm will fertilize the egg outside of the organism, as seen in spawning.

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.