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  4. Which of the following is the correct combination of the class of vertebrates and properties exhibited by it?

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Q. Which of the following is the correct combination of the class of vertebrates and properties exhibited by it?

NTA AbhyasNTA Abhyas 2020Animal Kingdom

Solution:

Most of the members of class Chondrichthyes (cartilaginous fishes) are viviparous, while those belonging to class Osteichthyes (bony fishes) are oviparous. Amphibians cannot maintain a constant internal temperature (poikilothermic), while mammals can maintain a constant internal temperature (homeothermic). Amphibians have a three-chambered heart, while birds have a four-chambered heart. Both birds and reptiles have internal fertilization.