Biology Chapter 16-2

Biology Chapter 16-2 - 1 Chapter 16 Section 2 Amphibians...

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Chapter 16 Section 2 - Amphibians Amphibians animals that live in water and on land They must return to water to mate and lay eggs. have legs have lungs lung - sac-like organ that takes oxygen from the air and delivers it to the blood examples: frogs, toads, and salamanders Characteristics Amphibian means “double life”. Most amphibians live part of their lives in water and part on land. They are ectotherms. Living in water helps them from drying out. The skin is thin, smooth, and moist. They absorb water through it instead of drinking. They can breathe either by their lungs or through their skin. Salamanders breathe only through their skin. Some frog’s skin is poisonous. Others are irritating. 1
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Amphibians and Metamorphosis
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Biology Chapter 16-2 - 1 Chapter 16 Section 2 Amphibians...

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