Botany - Animal Kingdom Question with Solution | TestHub

Chondrichthyes : They are marine animals with a streamlined body and have cartilaginous endoskeleton.

Placental mammal (infraclass Eutheria), any member of the mammalian group characterized by the presence of a placenta, which facilitates exchange of nutrients and wastes between the blood of the mother and that of the fetus. The placentals include all living mammals except marsupials and monotremes

Cyclostomes are marine but migrate for spawning to fresh water. After spawning, within a few days, they die. Their larvae, after metamorphosis, return to the ocean.

Chelone andTestudo (reptiles) are not able to maintain a constant body temperature