EVERYDAY SCIENCE

Detailed explanation-1: -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-2: -Amphibians usually reproduce via sexual reproduction. Generally, amphibians lay large numbers of eggs at one time, and they often do so in groups, all depositing their eggs in the same place at the same time for external fertilization.

Detailed explanation-3: -Reproduction of amphibians occurs through sexual reproduction. It involves the fusion of eggs produced in female ovaries, and sperms generated by male testes. But in the case of frogs, fertilization is generally external while it is internal in the case of salamanders and caecilians.

Detailed explanation-4: -Amphibians reproduce by laying eggs that do not have a soft skin, not a hard shell. Most females lay eggs in the water and the babies, called larvae or tadpoles, live in the water, using gills to breathe and finding food as fish do. As the tadpoles grow, they develop legs and lungs that allow them to live on land.

Detailed explanation-5: -In oviparity, fertilized eggs are laid outside the female’s body and develop there, receiving nourishment from the yolk that is a part of the egg. This occurs in most bony fish, many reptiles, some cartilaginous fish, most amphibians, two mammals, and all birds.