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The process of moving air or water acros...

The process of moving air or water across the gas-exchange surfaces of an animal is known as:

A

ventilation

B

active respiration

C

facilitated diffusion

D

countercurrent exchange

Text Solution

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The correct Answer is:
**Step-by-Step Text Solution:** 1. **Understanding Gaseous Exchange**: The question asks about the process of moving air or water across the gas-exchange surfaces of an animal. Gaseous exchange is essential for respiration, where oxygen is taken in and carbon dioxide is expelled. 2. **Identifying the Medium**: Depending on the type of animal, the medium for gaseous exchange differs. Terrestrial animals obtain oxygen from atmospheric air, while aquatic animals extract oxygen from water. 3. **Defining the Process**: The act of moving air (in terrestrial animals) or water (in aquatic animals) to facilitate this exchange is crucial. This movement is necessary for oxygen to reach the tissues and for carbon dioxide to be removed. 4. **Differentiating Terms**: The term "ventilation" specifically refers to the movement of air or water across the gas-exchange surfaces. It should not be confused with respiration, which involves the biochemical processes of energy production. 5. **Conclusion**: Therefore, the correct term for the process of moving air or water across the gas-exchange surfaces of an animal is "ventilation." **Final Answer**: Ventilation ---
**Step-by-Step Text Solution:** 1. **Understanding Gaseous Exchange**: The question asks about the process of moving air or water across the gas-exchange surfaces of an animal. Gaseous exchange is essential for respiration, where oxygen is taken in and carbon dioxide is expelled. 2. **Identifying the Medium**: Depending on the type of animal, the medium for gaseous exchange differs. Terrestrial animals obtain oxygen from atmospheric air, while aquatic animals extract oxygen from water. 3. **Defining the Process**: The act of moving air (in terrestrial animals) or water (in aquatic animals) to facilitate this exchange is crucial. This movement is necessary for oxygen to reach the tissues and for carbon dioxide to be removed. ...
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