What key physiological trait is shared among members of the class Chondrichthyes?
Answer
Absence of a swim bladder
A defining trait shared by members of Chondrichthyes, including the smooth hammerhead, is the absence of a swim bladder.
Related Questions
To which biological Class does the smooth hammerhead shark, *Sphyrna zygaena*, belong?What key physiological trait is shared among members of the class Chondrichthyes?Which anatomical feature characterizes members of the order Carcharhiniformes?What feature unites all species within the family Sphyrnidae?How is the specific species epithet, *zygaena*, commonly interpreted in biological contexts?How does the smooth hammerhead's cephalofoil differ from that of the scalloped hammerhead (*Sphyrna lewini*)?What is believed to be a functional role of the hammer-shaped head structure?Which other shark types are mentioned as belonging to the same order, Carcharhiniformes, as the smooth hammerhead?What is the general global distribution of *Sphyrna zygaena*?Why is accurate taxonomic identification critical for the smooth hammerhead according to conservation efforts?