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Which Is Not an Adaptation Seen in Fish Gills

Question 76

Multiple Choice

Which is not an adaptation seen in fish gills?


A) A countercurrent exchange system
B) Bidirectional ventilation
C) Morphological features that increase the surface area available for gas exchange
D) Morphological features that decrease the path length for diffusion of the respiratory gases
E) Morphological features that maximize the efficiency of O2 extraction

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