how can a frog respire through it's skin...??
Frog - as an amphibian, during its tadpole stage, breathes through its gills and skin. When turn into an adult frog, it grows lungs and looses gills and continue to breathe through its skin with tiny blood vessels, capillaries under the outer skin layer. It is called cutaneous gas exchange.
During hibernation, frogs don’t need as much oxygen. They only breathe through their skin at these times. They get oxygen in water or air through a thin layer of moisture. When the frog is hopping around on land, it cannot get enough oxygen through its skin only. Then it breathes through its nostrils also.
because fish have scales and are designed to live in a place where they have no need for skin respiration; water. all the fish needs are gills to filter out the disolved oxygen from within the water and use that. frogs generally live in humid wet tropical areas (mostly) and that tends to be fairly sweaty areas and that contributes but also a frogs skin needs to be kept moist because of its tendancy to dry out (thats why sometimes you see shrivelled little dead frogs which gets stuck in the house ) so the respiration or 'sweating' forms condensation on its skin and keeps it nice and moist...
this is the diffrence nd related answer between a fish nd frog respire !
thubs up plz!
The skin of a frog is permeable to oxygen and carbon dioxide, as well as to water. There are a number of blood vessels near the surface of the skin and when a frog is underwater, oxygen diffuses directly into the blood. When not submerged, a frog breathes by a process known as buccal pumping. Its lungs are similar to those of humans but the chest muscles are not involved in respiration, and there are no ribs or diaphragm to help move air in and out. Instead, it puffs out its throat and draws air in through the nostrils, which in many species can then be closed by valves. When the floor of the mouth is compressed, air is forced into the lungs.
This is how frogs breathe through their skins.