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BIOLOGY

JAMB 2011 - Question 26

Biology 2011 JAMB Past Questions - Question 26: The sequence of the one-way gaseous exchange mechanism in a fish is

Choose the most appropriate option for the gap .

The sequence of the one-way gaseous exchange mechanism in a fish is

A: mouth ------------- operculum------------- gills

B: mouth ------------- gills ---------------- operculum

C: operculum ------------gills ---------------mouth

D: gills --------- operculum---------- mouth.

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Correct Answer

Explanation

The mouth' opens to allow water containing dissolved oxygen to enter into the buccal cavity. The water is pushed to the gulls where gaseous exchange occurs. Water containing Carbon IV oxide is removed through the operculum.