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Amphibians
These cold-blooded vertebrate animals belong to the class Amphibia including over 6,200 species in three groups: caecilians (order Gymnophiona), frogs and toads (order Anura) and salamanders (order Caudata). Amphibians can live both in land and water.
1,068 Questions
What is an evolutionary innovation associated with amphibians?
The earliest forms of amphibians evolved from lobe-finned fish in the Devonian Period, around 350 million years ago. These fish had strong, bony fins that allowed them to drag themselves on land, and some of them developed lungs for breathing air. These two adaptations were very helpful in their freshwater environments that were often stagnant and dried out. Eventually the bony fins of these fish evolved into limbs that became better suited for terrestrial locomotion over time. Early amphibians still spent most of their lives in water and always had to lay their soft eggs in water.
One of the earliest and most well known ancestors of amphibians (and all tetrapods in general) is a lobe-finned fish called Eusthenopteron. Although it never actually went on land, it still had four fins with bone structures homologous to all modern tetrapods, and also had internal nostrils and enfolded enamel found on primitive labyrinthodont amphibians.
Another important transitional form is Tiktaalik, who is an important link in the transition between lobe-finned fish and tetrapods. By the structure of its jointed fins, which contain wrist bones, it was probably one of the first fish to crawl on land. However, it only did so under certain circumstances and still spent almost all of its time in water. It had both gills and primitive lungs, and had a flattened head shaped like that of an amphibian's.
The earliest amphibians include Acanthostega and Icthyostega. Their primitive limbs contained digits, but were still poorly adapted for moving efficiently on land. Yet it was a good start, and they would be succeeded by labyrinthodonts such as Hynerpeton and Eryops, who are the ancestors of true amphibians.
The first modern amphibians emerged in the Carboniferous Period and had all the adaptations necessary to make them suitable for living both in water and on land. Amphibians became the dominant terrestrial vertebrates through most of the Carboniferous until they are replaced by their descendants, the reptiles.
Why amphibians live near water or in a moist environment?
amphibians are those kind of animals,which couldnt leave without water ,and they also cant breath in water too long,so they need to come out on ground. they need to be clother to the water because they eat water insects, fishes,some kind of plants and so on, which are important for them. if they couldnt find food on ground,they are going into the water.
What amphibian is like a lizard?
Amphibians that have a simiiar body shape to lizards are called salamanders or newts. There is a visible difference between lizards and salamanders, though. Salamanders are moist and lack scales, while lizards are dry and have scales.
Can you name some reptiles and amphibians?
There are three orders of amphibians. The first order is anura, the frogs and toads. The second order is urodela, which is that salamanders and newts. The third order is apoda, or the caecilians.
What is structure and function of the body covering of amphibians?
It is covered in skin. This skin excretes a mucous layer which keeps it moist and also acts in protecting the animal from pollutants. Some amphibians can also breathe through their skin, although most have lungs for breathing.
The skin is glandular and contains both mucous and poison glands but lacks external structures such as scales, feathers, or hair, characteristic of other groups of tetrapods.
Amphibians are characterised by having a body covering of moist skin.
What is the most significant difference between amphibians and other animals?
the bum is the only thing that is different between fish and amphibians
Frog eyes have eyelids , both an upper and a lower one.
Yes they have necks, to lift their head.
yes they have necks called valves it allows it to submerge it into water so no water will enter their lungs
jump. hop is with one leg
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jump because frogs use two legs at a time alternativly. saying that they hop is commonly used because frogs seem to "hop arround" but it is actually jumping "technically".
but i guess "technically" no one cares what type of question is this!!!!!!!!!
weellll nnooo oonneee careesss aaabbooouuutt sssttuupppiiiddd FFRROOGGSS so what the heck
Does a Mexican axolotl camouflage or mimicry?
Axolotls in the wild are a brownish colour, which helps them to blend in with the riverbed that they live in. The white axolotls with red eyes are mutant albinos and are very rare in the wild. They find it very hard to camouflage.
What is an amphibian with a long slender body and no limbs?
Slow worms, also known as "Legless lizards".
How are amphibian offspring produced?
Most amphibians just abandon their young when they lay their eggs.
I have linked some information.
As far as I can tell from a scanning of that information, the creatures do not normally enter water once they are beyond the tadpole stage.
Nonetheless, I cannot be sure whether they definitely can or cannot swim. I hope the original questioner does some further research to get a more certain answer.
How do amphibians breathe through their skin?
Yes, actually 80 percent of their respiration is through their skin.
They need to keep their skin moist right? They can retain this tiny film of water by secreting a mucus. The oxygen is dissolved in this tiny film of water and absorbed by their blood capillaries in their skin (^_^)
yes they do, if its a small frogs u might want to cut it up a bit.
Which is the largest animal who can live on both land and water?
I would probably say either a hippopotamus or a walrus. I'm not sure about the weight comparison there.
What are animals that feed on the remains of dead animals called?
A carnivore. If you mean of the same species, a cannibal.
A carnivore is a meat eater however a carnivore that eats deserted dead meat is scavenger. such as a hyena or a vvulture to name a couple of examples.
No. Toads do not like water, most people think they do but they actually don't they just drink it. How I know that, is because when it rains toads pop out of their holes and go under shelter because they don't want to get drowned from the splashes.
Why is the axolotl endangered?
The axolotl is endangered because of the draining of its habitat lakes, the pollution of the bodies of water in which it resides, and the introduction of nonnative fish, such as the African Tilapia, which eat its eggs and food.
How often do you need to feed an axolotl?
It is reccomended to feed them about 2 or 3 times a week. And also, as they're more active in dim light, feeding them at evening or night is also reccomended.
