Animals require oxygen for aerobic respiration and must expel carbon dioxide, a process known as gas exchange. Various animals have evolved distinct mechanisms for this, such as lungs in mammals, gills in fish, and trachea in insects. Despite their differences, these systems share common features like large surface areas and efficient blood supply to facilitate rapid gas diffusion. The concentration gradient is crucial for effective gas exchange, and moisture aids in dissolving gases. Overall, these adaptations enable animals to efficiently take in oxygen and expel carbon dioxide.

Which of the following animals uses trachea for gas exchange?

• Mexican salamander

• Locust

• Shark

• Polar bear

What is the primary benefit of having a large surface area in gas exchange?

• It prevents water loss.

• It reduces the need for oxygen.

• It speeds up the diffusion of gases.

• It increases the temperature of the gases.

Why is a good blood supply crucial for efficient gas exchange?

• It allows for faster transport of gases.

• It helps in maintaining body temperature.

• It reduces the size of the lungs.

• It increases the concentration of carbon dioxide.

What role does moisture play in the process of gas exchange?

• It dissolves gases to speed up exchange.

• It reduces the surface area for diffusion.

• It increases the concentration of oxygen.

• It prevents the entry of carbon dioxide.

What is the concentration gradient in the context of gas exchange?

• The increase in temperature during gas exchange.

• The reduction of surface area for gas exchange.

• The difference in gas concentration between two areas.

• The similarity in gas concentration across the body.