Amphibians Copyright

8/7/2019 Amphibians Copyright

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Amphibians characteristicsy Amphibians spent part of their lives in

water and part on land.y Amphibians are ectotherms. There body

temperature changes when the temperature

of their surrounding changes.y This period during cold weather is called

hibernationy Hibernation is when amphibians that live

in in hot dry inviorments become inactiveand hide in ground when temperaturesbecome too hot.

y And when the weather is estivation itswhen the weather is hot through all of themonths .


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respirationy Amphibians have moist skin that is

smooth , thin and without scales. They

have many capillaries directly beneath theskin and in the lining of the mouth. Thismakes it possible for oxygen and carbondioxide to be exchanged through the skinand the mouth lining they also have smallsimple saclike lungs in the chest cavity forthe exchange of oxygen and carbondioxide.


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Circulationsy The three chambered heart in

amphibians is an importantchange from the circulatory

system of fish. In the threechambered heart , onechamber receives oxygen filledblood from the lungs and skin

,and another chamber.receives carbon dioxide filledblood back to the lungs .


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Reproductiony Amphibians depend on water to

reproduce ,because their eggs need

water which they dont have .yAmphibians eggs are fertilized externally

by the male. After the eggs come out ofthe female body the male releases sperm

over them..y Now many species developed special

reproductive adaptation enabling to


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Importance of

amphibiansy The importance of

amphibians is they live

on land and reproducein water, amphibiansare affected directly bychanges in the

environment ,including pesticidesand other pollution.


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BiOlOgIcAl InDiCaToRsyAs you know amphibians live and reproduce in water.

yAmphibians are affected my the by the changes in the

environment .y Since people dump harmful gases the Amphibians

absorb it through their skin.

y That makes them biological indicators.

Biological indicators are species whose

Overall health indicators the health particle

Of the ecosystem.


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Some Cool Pics of Amphibians


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SummaryAmphibian Characteristics

y Amphibians have two phases of life__ one in water and one

in landy All Amphibians have a three chambered heart, reproduce

in water by laying eggs, and go through metamorphosis.

Types and Importance ofAmphibians

y Frogs and Toads have short, broad bodies

While salamanders have long slender bodies.

y Amphibians are used for food, research, and

Important as Biological indicators.


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Amphibians Copyright

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