To which of the following are the scales of chondrichthyans most closely related in a structural sense?
A) osteichthyan scales
B) reptilian scales
C) mammalian scales
D) bird scales
E) chondrichthyan teeth
Answer: E
To which of the following are the scales of chondrichthyans most closely related in a structural sense?
A) osteichthyan scales
B) reptilian scales
C) mammalian scales
D) bird scales
E) chondrichthyan teeth
Answer: E
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