Multiple ChoiceWhich trait is shared by all vertebrates except cyclostomes at some point in their development?424views
Multiple ChoiceWhich of the following chordates is most likely to look the least like other chordates?530views
Multiple ChoiceWhich of the following are the four key features that characterize all chordates?665views
Multiple ChoiceIn which type of chordate is the spinal cord surrounded by a backbone composed of cartilage or bone?88views
Multiple ChoiceWhich of the following is NOT one of the four key derived characteristics shared by all chordates at some stage of their life cycle?85views
Multiple ChoiceWhich of the following is NOT one of the five key characteristics of chordates?539views
Multiple ChoiceVertebrates are distinguished by the possession of which of the following structures?680views
Multiple ChoiceWhich characteristic is absent in tunicates and lancelets but is present in vertebrates?568views
Multiple ChoiceWhich of the following is a characteristic of all chordates at some point during their life cycle?576views
Multiple ChoiceIf an animal has segments, bilateral symmetry, pharyngeal clefts, a post-anal tail, and deuterostomic development, it must be a member of the __________. 1000views