Do amphibians and reptiles go through metamorphosis?
Reptiles do not have a larval phase and do not go through metamorphosis. When the young are born or hatched, they look like miniature adults. Most reptiles lay shelled eggs on land. While most reptiles lay eggs, a few species of reptiles give live birth.
In case you were wondering (cause they are soooo flexible), snakes actually do have bones. Animals with bones are know as vertebrates -- snakes are vertebrates. A snake's backbone is made up of many vertebrae attached to ribs. Humans have approximately 33 vertebrae and 24 ribs.
- Detailed, close up images of leafcutter ants clearly show three different parts to their body, the head, thorax and abdomen and six legs demonstrating that an ant is an insect. Ants are invertebrates - we have a spine or backbone but invertebrates do not. Each ant has a different job in the colony.
- Reptiles are cold-blooded vertebrates. (Vertebrates have backbones.) They have dry skin covered with scales or bony plates and usually lay soft-shelled eggs. Check out mammals, birds, amphibians, fish, insects, and dinosaurs too!
- Insects are often described as “spineless” because they lack a backbone and internal skeleton. It is true that insects lack a backbone but they do have spines. In insects, spines are cellular outgrowths of the insect exoskeleton that are coated with cuticle. Cockroach spines are not at all wimpy.
Amphibians are cold-blooded vertebrates (vertebrates have backbones) that don't have scales. They live part of their lives in water and part on land. Want to see other animals? Check out mammals, reptiles, birds, fish, insects, and dinosaurs too!
- Amphibian eggs must be kept wet, as most species develop after a larval stage, a phase during which they use gills to breath underwater. It isn't it until they reach adulthood that they form lungs. Since geckos are reptiles, the females generally lay, on land, two soft, white eggs that harden quickly.
- Invertebrates are animals that do not have a backbone. Clams belong to a group of invertebrates called mollusks. The term shellfish includes members of the mollusk phylum and the crustacean subphylum. Crustaceans include lobsters, crabs and shrimp.
- Fish are neither mammals or amphibians. Mammals, reptiles, amphibians, birds, insects and you guessed it, fish. They aren't mammals or amphibians because they are fish.
Homology: From jaws to ears. You (and all living mammals) have one bone in your jaw and three bones inside your ear. Lizards, on the other hand, have many bones in their jaw and one bone inside their ears.
- Animal Body Types - Further Reading. The two extremes in the animal kingdom are endothermic homeotherms and ectothermic poikilotherms. Most mammals, including humans, as well as most birds are endothermic homeotherms, while most fish, invertibrates, reptiles, and amphibians are ectothermic poikilotherms.
- Snakes, lizards, crocodilians, and tuataras all have teeth. The teeth vary in their form, their attachment, and whether they are shed. Generally, the teeth of herbivorous species are broadly flattened with crushing surfaces. Those of most carnivorous reptiles are tapered to sharp points.
- Snakes have no visible ear, so they don't hear sounds as we do. But it's not quite right to say that snakes are deaf. They have vestiges of the apparatus for hearing inside their heads, and that setup is attached to their jaw bones, so they feel vibrations very well and may hear low-frequency airborne sounds.
Updated: 17th October 2019