A tadpole or polliwog (also spelled pollywog) is the larval stage in the biological life cycle of an amphibian. Most tadpoles are fully aquatic, though some species of amphibians have tadpoles that are terrestrial. Tadpoles have some fish-like features that may not be found in adult amphibians such as a lateral line, gills and swimming tails.

Tadpole, aquatic larval stage of frogs and toads. Compared with the larvae of salamanders, tadpoles have short oval bodies with broad tails, small mouths, and no external gills. The internal gills are concealed by a covering known as an operculum.

2024年3月29日 · Frogs undergo a fascinating metamorphosis, not a traditional birth. Within a few weeks of the fertilization, the eggs hatch into young larvae, called tadpoles. These exclusively aquatic creatures have gills for breathing underwater and a tail for swimming.

Now, the baby frogs are known as tadpoles. They have gills, a mouth, and a long tail, which they need for swimming! DID YOU KNOW? The tadpole stage of the frog life cycle is also known as the larval stage. Tadpoles are frog larvae, in the same way that caterpillars are butterfly larvae!

2025年1月16日 · Amphibian - Larvae, Metamorphosis, Adaptations: Amphibian larvae (called tadpoles for frogs and toads) have a free-living existence while completing embryonic development and growth. The larvae transform from embryo to juvenile by the process of metamorphosis.

2012年5月19日 · Tadpoles are the larval stages of frogs and toads. Amphibians differ from most other vertebrates (higher organisms with a backbone) in that their eggs develop into a larval stage, known as a tadpole. The word comes from the …

Metamorphosis of the tadpole larva into an adult frog is one of the most striking transformations in all of biology . In amphibians, metamorphosis is initiated by hormones from the tadpole's thyroid gland, and these changes prepare an aquatic organism for a terrestrial existence.

2024年8月31日 · As the fertilized eggs mature, the yolk in each egg splits into more and more cells and begins to take the form of a tadpole, the larva of a frog. Within one to three weeks, the egg is ready to hatch, and a tiny tadpole breaks free. Tadpoles have rudimentary gills, …

When a tadpole larva or the frog larva hatches from the egg, it uses its tail to swim in the water. On the underside, the tadpole has a mouth that is used to scrape tiny green plants called the algae from the surfaces of rocks and plants.

Most frogs and other amphibians hatch as fish-like larvae called tadpoles, or "pollywogs." Tadpoles exist to eat and grow. They eventually transform into froglets, a process called metamorphosis. These soft globs of flesh provide tasty morsels for …