Is frog development complete metamorphosis?

Yes, frogs are animals that undergo complete metamorphosis. Complete metamorphosis is a development mode in which there are obvious differences in the developmental stages of two different forms of organisms. In the case of frogs, this refers to the changes from egg to mature individual.

The following is a detailed introduction to the complete metamorphosis development process of frogs:

Egg (egg stage): A frog's life begins as an egg. Female frogs lay their eggs, usually in water or a moist environment to ensure their protection.

Tadpole (larval stage): What hatch from the eggs are tadpoles, which are completely aquatic. Tadpoles have no legs and breathe through gills. Their lifestyle and body structure are completely different from adult frogs. At this stage, tadpoles feed mainly on suspended particles and saprophytes in the draft.

Tailless tadpole stage: After a period of time, the tadpole will undergo metamorphosis, starting to grow hind limbs, and then gradually absorb the tail. This process is called "tail-sucking metamorphosis." After metamorphosis is complete, they transform into four-legged, tailless tadpoles.

Frog (adult stage): Eventually, the tailless tadpole will further transform into a frog. They can live on land and begin to feed on terrestrial foods such as insects. The skin also changes, gradually changing from an aquatic state to a terrestrial form. After reaching sexual maturity, frogs have the ability to lay eggs, mate and reproduce.

During the entire process, the frog will undergo obvious changes in morphology and living environment, which is complete metamorphosis. Each stage has special characteristics adapted to the environment of that stage, allowing the frog to transform from aquatic life to terrestrial life and complete the life cycle.

animal tags： frog