Which Statement About Gill Ventilation in Fishes Is False

question 124

Multiple Choice

Which statement about gill ventilation in fishes is false?

• A) In some species, gill ventilation occurs via open-mouth swimming.
• B) In most species, gill ventilation occurs via a two-pump mechanism.
• C) During an expiration by a fish using the two-pump mechanism, the mouth cavity contracts, forcing water over the gills.
• D) During an inspiration by a fish using the two-pump mechanism, the opercular cavity expands and the opercular flaps are kept closed.
• E) Tunas use the two-pump mechanism.

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