The diagram illustrates the life cycle of a frog, showing the various stages from the initial egg stage to adulthood.
Overall, the life cycle consists of five main stages, beginning with eggs or spawn and ending with a fully grown adult frog. The process is cyclical, as adult frogs reproduce by laying eggs, from which a new generation develops. A notable feature of the cycle is the gradual development of legs and the transformation from an aquatic tadpole into a land-dwelling frog.
Initially, a female frog lays a cluster of eggs, commonly referred to as spawn, in water. These eggs subsequently hatch into tadpoles. At this stage, the young creatures have elongated bodies and tails but do not yet possess legs. As they continue to grow, their hind legs and subsequently their front legs develop, resulting in a tadpole with four legs.
Following this, the tadpole undergoes further physical changes and becomes a young frog, or froglet. During this stage, its body becomes more frog-like, while its tail gradually becomes shorter. Eventually, the tail disappears completely and the froglet develops into a fully mature adult frog. The adult frog is then capable of reproducing and laying eggs, thereby restarting the entire life cycle.