Which of the following INCREASES the amount of oxygen that a fish can extract from the surrounding seawater?

Question

Quizplus · Accepted Answer

All of these choices are correct. A) Gills with a large surface area provide more opportunities for oxygen exchange. B) Very thin lamellae reduce the distance through which oxygen has to travel to reach the fish's bloodstream. C) Countercurrent exchange allows for a gradient of oxygen concentration to be maintained, maximizing the amount of oxygen that can be extracted from the water. D) Ventilation of the gills with the aid of an operculum allows for a constant flow of water over the gills, ensuring a continuous supply of oxygen.

Which of the Following INCREASES the Amount of Oxygen That