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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
Why do the mother frogs lay eggs in a big clump?
so they keep there babies together and away from predators
- Female toads are generally larger because of the many eggs they carry.
- Females have thinner arms than males, which have stronger, muscular forearms.
- During the breeding season, male toads have dark "thumbs" or metatarsal knobs on their front legs. These extra rough patches enable them to clamp a female during breeding season. (The thumbs return to normal once breeding season is over.)
- Male toads are noisier, as the females make no sound.
- During breeding season, the male's throat sac is darker.
Well, There are many ways you can tell the gender of your toad but the most common way is to LIGHTLY tap your toad on it's back, if it croaks it's telling you that its not calling at this time( which only boy toads do). Another way you can tell is by observing your toad closely atleast twice a day, if you do this chances are you will find a month were its calling( as I said before, only boy toads do this) but if you observe it daily and it doesn't do this, that means its a girl, Also boy toad's thumbs are very big!!!
When did amphibians first evolve?
Acanthostega was (were?) the first tetrapods that were able to go on ground, so they could be considered the first amphibians. They originated 365 million years ago.
- ..."were"... they originated in the late Devonian Period in the Paleozoic Era 365 million years ago. Hope that helps! :)
Amphibians, like any other animal in the animal kingdom, excrete in the same way that we do. Amphibians excrete through, obviously, feces, and urine. They also rid themselves of waste through their sweat glands; many wastes exit the body through the form of sweat. The last most common form, is through respiration. Carbon dioxide is considered to be a waste, and it, along with many other gasses are released from the body through your breath!
How is an amphibians circulatory system different from that of a fish?
Humans give birth to live young, but fish are oviparous (egg-laying).
Amphibians Share:
They can all survive on both water and land
Cold Blooded
Gills then lungs
They go through metamorphosis
Hope this helps :))
During some parts of the years, but on the other parts of the years they live on land.
Feed them those little black sugar ants. They love those! Baby crickets are also a good substance for them to munch on, crunchy, good for their speed skills and also high in protein for those little horny toads.
Why do amphibians return to the water to lay their eggs?
Amphibians originally were water-living creatures, who later on evolved and adapted, therefore coming out of the water to become both land and water animals. However, they cannot change the way they are born, and where they are born. It's always been the same-amphibians will always go into the water to lay their eggs, where the eggs will hatch, and slowly evolve to become accustomed to both environments. It's in the genes or something like that.
Do amphibians have bodies like any other vertebrates?
yes: all amphibians are vertebrates and have backbones
What problem caused biologists to believe amphibians evolved from certain fish?
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 Tulerpeton 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.
What is the name for an animal that feeds on refuse or the flesh of dead animals?
An animal that feeds on carrion, that is refuse or the remains of dead animals is referred to as a scavenger. An example of this type of animal is a vulture or hyena.
They certainly eat Mayfles as they emerge from their larval stages. This is why fishing flies try to imitate these insects.
Are amphibians oviparous or ovoviviparous?
Oviparous, because the larvae are hatched after the eggs are laid.
Do amphibians live underwater or on land?
amphibians need both land and water to survive most of them spend some part of their lives in water and some on land.
Why do amphibians lay 200 eggs?
Because frogs have a high mortality rate, meaning that a high percentage of the eggs will never make it to adulthood. They lay a lot of eggs because even if 1% of the eggs make it to adulthood, if you lay 5,000 eggs you still get 50 that make it to adulthood.
Does amphibians have skin with scales or larger scales?
Amphibians do not have hard scales. Their skin is smooth. It is covered in a thin layer of mucus to keep it moist.
How the process of reproduction fish and amphibians?
they reproduce externally and internally
They lay eggs in water.
Amphibians, like fish, lay eggs in the water.
by laying eggs
They lay eggs.
All amphibians reproduce by laying eggs in the water.
