You find a new animal. It is a large, predatory marine vertebrate covered with scales. It has a two-chambered heart and gills, and its skeleton is made of cartilage. You should classify it as:

Question

Quizplus · Accepted Answer

The presence of scales, gills and a cartilaginous skeleton indicates that this animal is a fish. The two-chambered heart is a characteristic feature of fishes and puts it in either the Chondrichthyes or the Actinopterygii. However, the fact that it has a cartilaginous skeleton instead of a bony skeleton eliminates the Actinopterygii, leaving only the Chondrichthyes as the correct classification.

You Find a New Animal