Roni visited an aquarium with her teacher to study about various organisms. She saw an organism, with fins and tails swimming around. Her teacher told her that it is a warm-blooded animal. What could the animal be? Also, identify the class to which the animal beongs to.

Salmon - Pisces

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Amphioxus - Protochordata

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Dolphin - Mammalia

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Starfish - Echinodermata

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Solution

The correct option is C Dolphin - Mammalia
Mammals and Aves are warm-blooded. Mammals are viviparous and Aves are oviparous in nature.
$∙$ Mammals are divided into land mammals, marine mammals and flying mammals based on their habitat.
$∙$ Marine mammals have thick outer hair. E.g., Dolphin, whale, etc.
$∙$ Pisces are marine organisms. They are cold-blooded and are oviparous in nature.
So, the animal that Roni saw could be a dolphin.

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