Observe the given set of characteristics and identify the class of vertebrata they belong to:
1) Streamlined body
2) Cold-blooded
3) Two-chambered heart
A
Amphibia
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B
Reptilia
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C
Pisces
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D
Aves
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Solution
The correct option is C Pisces All organisms belonging to the class Pisces have a streamlined body and are cold-blooded. They are oviparous and have scales all over their body. They have a two-chambered heart and exhibit external fertilisation. All fishes fall under this category.