Question Detail

BIO 102 Mechanisms of Animal Respiration and Circulation Objective Question

Question

How do fish typically move water over their gills?
Options
A By absorbing it through their skin
B By pulling it through their mouths and pumping it over the filaments
Correct Answer
C By using spiracles located on their lateral body surface
D By swimming backward to force water into the gill slits
Correct Answer

Option B is the correct answer.

Detailed Explanation

Fish exchange gases by pulling oxygen-rich water through their mouths and pumping it over the gills.

Hint

They 'swallow' the water first.

Question Info