Molybdenum is the essential constituent of

Options

A. nitrogenase
B. respiratory chain
C. growth regulators
D. chlorophyll

Answer

**Step-by-Step Solution:**

1. **Identify the Nutrient in Question**: The question asks about Molybdenum and its essential constituents.

2. **Understand the Role of Molybdenum**: Molybdenum is recognized as an essential micronutrient for plants, which means it is required in small amounts.

3. **List the Key Components of Molybdenum**: Molybdenum is a crucial component of several enzymes, particularly nitrogenase and nitrate reductase, which are vital for nitrogen metabolism in plants.

4. **Determine the Functions of Nitrogenase**: Nitrogenase is an enzyme that facilitates nitrogen fixation, a process where atmospheric nitrogen is converted into a form usable by plants.

5. **Clarify Misconceptions**: Molybdenum is not a component of growth regulators or chlorophyll. Growth regulators are primarily associated with other elements, and chlorophyll contains magnesium in its structure.

6. **Conclude the Essential Constituents**: The essential constituents of Molybdenum include nitrogenase and nitrate reductase, confirming its role in nitrogen metabolism.

7. **Final Answer**: Molybdenum is the essential constituent of nitrogenase and nitrate reductase.

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