The provided diagram illustrates the natural life cycle of a frog. Overall, this cyclical process comprises 11 distinct stages, depicting the creature’s continuous growth and development, initiating the fertilized eggs into a tadpole and finally becoming a fully grown amphibian.
In the initial phase, adult frog lay fertilized eggs in a pond, commencing the cycle. These eggs evolve into embryos, giving rise to small tadpoles with a short tail that immediately clings to the plants in the pond. These tadpoles undergo a remarkable colour transition from black to dark green, accompanied by the elongation of their tails. Concurrently, external gills develop, enhancing their respiratory capabilities. The subsequent advancement involves the appearance of hind legs, significantly improving their swimming ability.
As the life cycle progresses, the baby frog relies on the nutrients stored in its tail to survive. This results in the growth of front limbs while the tail gradually shrinks and eventually disappears. The creature undergoes substantial enlargement at each stage, transforming its colour from dark green to a vibrant hue. When the tail vanishes, the frog stands supported by four limbs. In the final phase, it emerges as a fully developed amphibian, ready to start the cycle anew by laying eggs.