In aquatic organisms,highly folded structures that exchange gases directly with water are:

Question

Quizplus · Accepted Answer

Gills are the highly folded structures found in aquatic organisms that directly exchange gases with water. They are used for respiration and allow the organism to extract oxygen from the water and release carbon dioxide. Spicules are small, needle-like structures found in sponges. Alveoli are small, air-filled sacs in the lungs of vertebrates. Tracheae are the tubes that insects use for gas exchange. Spiracles are the openings on the surface of some insects through which air enters the tracheal system.

In Aquatic Organisms,highly Folded Structures That Exchange Gases Directly with Water