Which of the following groups of animals correctly matched with its charcateristic feature without any exception ?
Reptilia - 3 chambered heart with an incompletely divided ventricle
Chordata - A mouth with an upper and a lower jaw
Chondrichthyes - Cartilaginous endoskeleton
mammalia - give birth to young ones
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.