Amphibians are one of the most ancestral-like tetrapods. a) What evolutionary changes have occurred between fish...

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Biology

Amphibians are one of the most ancestral-like tetrapods.
a) What evolutionary changes have occurred between fish &hibians?
b) What features did sarcopterygii have that allowed to move toland?
c) Why/what features make people call amphibians â€œlivingfossilsâ€?
d) What considerable changes occurred in the cardiovascularsystem of amphibians?

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a Important evolutionary cahnge is the development of lung for respiration on land Lung evolution has occured form airbladder of the fish which is used in buoyancy Next exolutionary change is movement on land for which the limbs developed instead of fins in the fishAmphibians are the first tetrapods having four limbs Amphibians also had to adapt ways to prevent decication Amphibians have moist skin because there are number of mucus secreting glands in the skin which keep the skin moist and that prevents the body from desication Skin also helps frog in respiration as their See Answer

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