Advantages of closed circulatory system over open circulatory system includes which of the following?

Options

A. Closed system can direct blood to specific tissues
B. Exchange occurs more rapidly
C. Close circulatory system can support higher levels of metabolic activity
D. All

Answer

To answer the question about the advantages of a closed circulatory system over an open circulatory system, we can break it down into the following steps:

### Step-by-Step Solution:

1. **Definition of Circulatory Systems**:
- A closed circulatory system is one in which blood is contained within vessels and is circulated by the heart.
- An open circulatory system, on the other hand, allows blood to flow freely in open spaces or cavities, mixing with interstitial fluid.

2. **Blood Flow Direction**:
- In a closed circulatory system, blood can be directed specifically to tissues that require it, allowing for more efficient delivery of oxygen and nutrients.

3. **Rate of Exchange**:
- The closed system allows for rapid movement of blood through vessels, facilitating quicker exchange of gases, nutrients, and waste products between blood and tissues.

4. **Metabolic Activity**:
- Organisms with a closed circulatory system tend to have higher metabolic rates. This is because the efficient transport of oxygen and nutrients supports more active lifestyles.

5. **Examples**:
- Many animals, including humans, possess a closed circulatory system, which correlates with their higher metabolic demands compared to those with open systems.

6. **Conclusion**:
- The advantages of a closed circulatory system include the ability to direct blood flow to specific tissues, rapid exchange of materials, and support for higher metabolic activity.

### Final Answer:
The advantages of a closed circulatory system over an open circulatory system include:
- The ability to direct blood to specific tissues.
- More rapid exchange of gases and nutrients.
- Support for higher metabolic activity.