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Which of the following groups of animals correctly matched with its charcateristic feature without any exception ? 

Option: 1

Reptilia - 3 chambered heart with an incompletely divided ventricle 


Option: 2

Chordata - A mouth with an upper and a lower jaw


Option: 3

Chondrichthyes - Cartilaginous endoskeleton 


Option: 4

mammalia - give birth to young ones 


Answers (1)

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Chondricthyes are cartilagious fishes without any exception 

Reptilia possess 3-chambered heart with an incompletely divided ventricle and two atria. However, the crocodile is an exception as it has the 4-chambered heart. Chordata possesses a mouth provided with an upper and a lower jaw except for jawless fishes. All Chondrichthyes possess cartilaginous endoskeleton without exception. Mammalia gives birth to young ones. However, Monotremes are mammals that lay eggs instead of giving birth to live young.

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Divya Prakash Singh

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