Bird A warm- blooded vertebrate that has a body covering of feathers.
13.What is an Amphibian? 1. One group of vertebrate animals is the amphibians 2 Vocabulary:...
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Transcript of 13.What is an Amphibian? 1. One group of vertebrate animals is the amphibians 2 Vocabulary:...
![Page 1: 13.What is an Amphibian? 1. One group of vertebrate animals is the amphibians 2 Vocabulary: amphibians A cold-blooded vertebrate animal that lays eggs.](https://reader036.fdocuments.in/reader036/viewer/2022062720/56649f115503460f94c23ad7/html5/thumbnails/1.jpg)
13. What is an Amphibian?
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One group of vertebrate animals is the amphibians
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Vocabulary:
amphibians
A cold-blooded vertebrate animal that lays eggs in water
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Amphibians include frogs, toads, and salamanders
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Amphibians are cold-blooded
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Vocabulary:
Cold-blooded
The body temperature of an animal changes with the temperature of the air
or water around it
![Page 5: 13.What is an Amphibian? 1. One group of vertebrate animals is the amphibians 2 Vocabulary: amphibians A cold-blooded vertebrate animal that lays eggs.](https://reader036.fdocuments.in/reader036/viewer/2022062720/56649f115503460f94c23ad7/html5/thumbnails/5.jpg)
When amphibians reproduce, they lay eggs, which is the first stage of
the life cycle of an amphibian
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Most lay eggs in water
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The young that hatch live in the water and are called tadpoles
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Vocabulary:
tadpole
A young frog or toad that has gills and a tail but no legs
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The tadpole is the second stage of the life cycle of an amphibian
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The tadpole looks very different from its parents
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A tadpole has gills and a tail, but does not have legs
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As it grows the tadpole loses its gills and grows lungs
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The tadpole loses its tail and grows legs
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When these changes are over the tadpole leaves the water and lives on
land
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It is now an adult frog
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This is the third stage of the life cycle of an amphibian
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2
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When amphibians are adults, they live on land and breathe air with lungs
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Most amphibians also take in air through their skin
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To be able to take in air through their skins, it
must be moist
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So amphibians are found near water or in wet places