amphibians amphibians lead double lives—one in water and one on land. many begin life with gills,...

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Amphibians Amphibians lead double lives— one in water and one on land. Many begin life with gills, then develop lungs as they age. They are vertebrate animals that include frogs, toads, salamanders, and newts as well as odd, wormlike caecilians (seh-SILL-yuns). They are cold-blooded, using the environment to regulate their body temperature. Early amphibians were the first animals to leave the sea and

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Page 1: Amphibians Amphibians lead double lives—one in water and one on land. Many begin life with gills, then develop lungs as they age. They are vertebrate animals

Amphibians

Amphibians lead double lives—one in water and one on land. Many

begin life with gills, then develop lungs as they age. They are

vertebrate animals that include frogs, toads, salamanders, and newts as well as odd, wormlike

caecilians (seh-SILL-yuns). They are cold-blooded, using the

environment to regulate their body temperature. Early amphibians were the first animals to leave the sea and

venture onto land.

Page 2: Amphibians Amphibians lead double lives—one in water and one on land. Many begin life with gills, then develop lungs as they age. They are vertebrate animals

Metamorphosis

• Amphibians from gills to lungs

Adult frog

eggs

Tadpole(larva)

Tadpole(larva)

Tadpole(larva)

http://www.enchantedlearning.com/label/

Page 3: Amphibians Amphibians lead double lives—one in water and one on land. Many begin life with gills, then develop lungs as they age. They are vertebrate animals

Respiration: tadpole: gills adult frog: lungs Circulation: tadpole two-chambered heart adult frog three-chambered heart Homeostasis: Ectotherm (animal that has variable body temperature and gets its heat from external sources)

Life Functions

http://www.enchantedlearning.com/subjects/amphibians/Frogquiz.shtml

http://www.enchantedlearning.com/subjects/amphibians/Newtprintout.shtml

http://www.enchantedlearning.com/subjects/amphibians/Poisonfrogstrawbprintout.shtml

http://www.enchantedlearning.com/subjects/amphibians/Salamanderprintout.shtml

http://www.enchantedlearning.com/subjects/amphibians/springpeeperprintout.shtml

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CHAPTER VII THE GILLS

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GunderFrank Gills Sistemamundial

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Gills Onions LLC

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Exemplar for Internal Achievement Standard Biology Level 2 · gas exchange in a different way to mammals. They use gills and the flow of water over their gills to take O2 and to remove

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Dana Eisenbeil & Bomi Son Second Grade Science Frogs are amphibians – Cold blooded animals – Gills to lungs Metamorphism Life Cycle of Frogs – Egg –

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