The diagram outlines the growth of an egg to a fully grown frog who inhabits the water.
Overall, the life cycle of a frog is a multi-step, natural, cyclic process that starts from the production of fertilized eggs and ends with a mature frog.
First of all, eggs are produced through the reproduction cycle and are without the care of their parents in the pond. The yolk that is located in the center of the egg is protected by a transparent jelly-like substance from any outer threats. Following this, small eggs grow into embryos and slowly change into tadpoles. Tadpoles usually cling to algaes or different types of vegetation around them due to their nature of being herbivores, and get their needed energy resources from plants. Subsequently, their body structure undergoes changes like appearance of outer breathing gills and consistent growth of their tails.
At this stage of life, they go through metamorphosis, which is a usual process for an amphibian, and grow hindlegs. As they alter their habitat from water to land, their colour keeps on changing from darker green to a lighter one and their tails become their main storage of food. Eventually, their body structure gets more complex and front limbs appear to speed up their movement on the ground. Once both pairs of legs are grown, their tails get shorter since they are not necessary for energy production and limit frogs’ mobility. After completion of this stage, the next one is the development of a juvenile frog that freely lives in land and water and searches for its own food. Finally, the frogs mature and turn into an adult toad, which has all of the evolved body organisms and is ready to produce another generation of frogs to keep the balance in the ecosystem.