Which Statement About the Structure of the Fish Gill Is

question 151

Multiple Choice

Which statement about the structure of the fish gill is true?

• A) Efferent vessels bring blood to the gills, whereas afferent vessels take blood away from the gills.
• B) Exchange of respiratory gases occurs within the lamellae of the gill filaments.
• C) The efferent and afferent vessels are the countercurrent flow system of the gill.
• D) The lamellae are further subdivided into gill filaments.
• E) The opercular flaps open to take in water from outside into the gill chamber.

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