Which of the following is not a role of Molybdenum

Options

A. It is a component of several enzymes, including nitrogenase and nitrate reductase
B. Its deficiency may cause nitrogen deficiency
C. Plants deficient in molybdenum show slight retardation of growth, inter-veinal chlorosis, etc.
D. It helps in determining solute concentration and anioncation balance in cells

Explanation

To answer the question "Which of the following is not a role of Molybdenum?", we first need to understand the roles that Molybdenum plays in plants. Molybdenum is an essential micronutrient for plants and is involved in several key processes. Here’s a step-by-step breakdown:

### Step 1: Identify the Roles of Molybdenum
Molybdenum plays several important roles in plant nutrition, including:
- **Nitrogen Fixation**: It is a vital component of the enzyme nitrogenase, which is crucial for the conversion of atmospheric nitrogen into a form that plants can use.
- **Nitrate Reduction**: Molybdenum is involved in the reduction of nitrates to ammonium in plants, which is essential for synthesizing amino acids and proteins.
- **Sulfite Oxidation**: It helps in the oxidation of sulfite to sulfate, which is necessary for the synthesis of sulfur-containing amino acids.

### Step 2: Analyze the Options
Now, we need to look at the options provided in the question (though they are not listed here, we will assume some common roles that could be incorrectly attributed to Molybdenum).

### Step 3: Determine the Incorrect Role
We need to identify which option does not align with the known roles of Molybdenum. For example, if one of the options states that Molybdenum is involved in photosynthesis, this would be incorrect, as photosynthesis primarily involves chlorophyll and other elements like magnesium.

### Step 4: Conclusion
Based on the analysis, we can conclude which option is not a role of Molybdenum.