Multiple ChoiceWhich characteristic is absent in tunicates and lancelets but is present in vertebrates?566views
Multiple ChoiceWhich of the following is a characteristic of all chordates at some point during their life cycle?573views
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
Multiple ChoiceWhich of the following chordate characteristics contributes most to the formation of your ears? 1091views
Multiple ChoiceWhich of the following chordate characteristics contributes most to suspension-feeding devices in many invertebrate chordates? 1039views
Multiple ChoiceWhich of the following can be found in vertebrates but not in lancelets and tunicates? 1243views
Multiple ChoiceA lamprey, a shark, a lizard, and a rabbit share all the following characteristics except __________. 1548views
Multiple ChoiceThe operculum was an important adaptation for fish because it helps with __________. 1123views
Multiple ChoiceWhich of the following organisms is most closely related to the ancestor of modern amphibians? 1553views