Law of limiting factor is

Options

A. Law of maximum
B. Law of minimum
C. Law of optimum
D. All the above.

Answer

**Step-by-Step Solution:**

1. **Understanding the Law of Limiting Factor**: The Law of Limiting Factor, proposed by F.F. Blackman in 1905, states that when a metabolic process is controlled by multiple factors, the rate of that process is determined by the factor that is in the least supply or is the slowest among them.

2. **Application in Photosynthesis**: In the context of photosynthesis, several factors such as light intensity, carbon dioxide concentration, temperature, and water availability can influence the rate of photosynthesis. However, if one of these factors is in short supply, it will limit the overall rate of photosynthesis, regardless of the abundance of other factors.

3. **Identifying the Correct Terminology**: The Law of Limiting Factor is also referred to as the "Law of Minimum." This is because the factor that is in the minimum amount (or is limiting) will control the rate of the process.

4. **Exclusion of Other Options**: The options provided include "Law of Maximum," "Law of Minimum," "Law of Optimum," and "All of the Above." Since the Law of Limiting Factor is specifically about the limiting factor that is in minimum supply, the correct answer is "Law of Minimum." The terms "Law of Maximum" and "Law of Optimum" do not correctly describe this principle.

5. **Conclusion**: Therefore, the Law of Limiting Factor is synonymous with the Law of Minimum, and the correct answer to the question is "Law of Minimum."

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