The conditions that ensure successful exchange of gases in multicellular organisms include the following except
Answer Details
The exchange of gases in multicellular organisms is a vital process to obtain oxygen and get rid of carbon dioxide. For successful gas exchange, there are certain conditions that need to be met.
The first condition is a concentration gradient across the respiratory surface. This means that there must be a difference in the concentration of gases between the internal and external environments. Oxygen should be more concentrated outside while carbon dioxide should be more concentrated inside. This difference in concentration allows for the diffusion of gases across the respiratory surface.
The second condition is the presence of a thin membrane as the respiratory surface. The respiratory surface should be thin to allow for the easy diffusion of gases across it. This ensures that gases can quickly move in and out of the body.
The third condition is the last transportation of absorbed gases. After gases have diffused across the respiratory surface, they should be transported to the cells that need them. This transportation is done through the circulatory system, which moves gases from the respiratory surface to the cells and back again.
The fourth condition is the presence of a large surface area of the respiratory organ. The larger the surface area, the more space there is for gas exchange to occur. This is important for animals that require a lot of oxygen, like birds or mammals.
The fifth condition is the absence of a small, dry surface area of the respiratory organ. This option is incorrect because a dry surface area would make it difficult for gases to diffuse across it. The respiratory surface should be moist to allow for the easy diffusion of gases.
In summary, successful exchange of gases in multicellular organisms requires a concentration gradient, a thin membrane, transportation of absorbed gases, a large surface area of the respiratory organ, and a moist respiratory surface.