The diagram explains the separate steps involved in the life of a frog. Overall, tadpoles which appear from eggs in the water move trough a number of stages before going onto land and evolving into adult frogs.
The life of a frog begins as eggs and develops into embryos. As, the next step, it further transforms into a tadpole, which consists of three different types of slight changes.
Following that frog’s front legs begin to grow, and afterwards, the final stage of its growth under water takes place which is called “start of pulmonary breathing” where the gasping system of frog develops.
After the frog is ready for its life outside the water, the next a tadpole frog stage begins. The tadpole frog has all the features of the adult one, but has a tail and its size is different. Finally, the frog grows up, its size is almost doubled and the tail is lost, which marks the end of the frog’s development.