explain how animal in vertebrata are classified into further sub groups .
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Vertebrates are further classified according to several criteria like exoskeleton, respiratory organs, method of giving birth, number of chambers in heart, mode of living etc. They are further classified into classes Pisces, Amphibia, Reptilia, Aves and Mammals.
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Answer:
its divided on basis of
Explanation:
1 presence of exoskeleton in form of scales,hair,feather
2 mode of respiration,in form of gills,lungs,or skin
3 by nature of heart
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