Which of the following statements is wrong about the closed circulatory system?

Options

A. Blood remains within blood vessels and never comes in direct connect with the body cells.
B. In it flow of fluid can be more precisely regulated.
C. There is no blood capillary.
D. Blood flow is more rapid due to higher pressure.

Answer

To determine which statement is wrong about the closed circulatory system, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Understanding the Closed Circulatory System**:
- In a closed circulatory system, blood circulates within a network of blood vessels. This system is found in organisms such as humans, other mammals, and some other vertebrates.

2. **Analyzing the First Statement**:
- **Statement**: "Blood remains within blood vessels and never comes in direct contact with the blood cells."
- **Analysis**: This statement is correct. In a closed circulatory system, blood is contained within vessels, and it does not come into direct contact with the surrounding tissues.

3. **Analyzing the Second Statement**:
- **Statement**: "Flow of blood can be more precisely regulated."
- **Analysis**: This statement is also correct. In a closed circulatory system, the flow of blood can be regulated by adjusting the diameter of blood vessels, which allows for precise control over blood distribution.

4. **Analyzing the Third Statement**:
- **Statement**: "Due to high pressure."
- **Analysis**: This statement is correct. The closed circulatory system operates under higher pressure compared to an open circulatory system, which helps in the efficient transport of blood and nutrients.

5. **Conclusion**:
- After analyzing the statements, we find that all the statements provided in the options are correct regarding the closed circulatory system. However, if we were to consider the context of the question, the second statement about the flow of blood being more precisely regulated could be misleading if interpreted in the context of comparing closed and open systems. Therefore, if one of the statements is to be considered wrong, it could be the one related to the regulation of blood flow, as it implies a comparison that may not be clear without context.

### Final Answer:
The wrong statement about the closed circulatory system is: "Flow of blood can be more precisely regulated" (if interpreted in the context of comparing with an open circulatory system).