Find out the mismatch of the following

Options

A. Copper - Plastocyanin
B. Nickel - Inducing disease resistance
C. Zinc - Synthesis of Cytochromes
D. Iron - Ferredoxin

Answer

To find the mismatch in the provided options, we will analyze each pairing one by one.

### Step-by-Step Solution:

1. **Plastocyanin - Copper**:
- Plastocyanin is a protein involved in the electron transport chain in photosynthesis. It contains copper as a key component that facilitates electron transfer.
- **Conclusion**: This pairing is correct.

2. **Nickel - Inducing Disease Resistance**:
- Nickel is known to play a role in plant defense mechanisms and can induce resistance to certain diseases.
- **Conclusion**: This pairing is also correct.

3. **Zinc - Synthesis of Cytochrome**:
- Cytochromes are heme-containing proteins that are crucial for electron transport. They are primarily composed of iron, not zinc.
- **Conclusion**: This pairing is incorrect, making it the mismatch.

4. **Iron - Pyridoxin**:
- Pyridoxin, also known as vitamin B6, is not directly related to iron. However, iron is essential for various metabolic processes in plants, but it does not specifically relate to pyridoxin synthesis.
- **Conclusion**: This pairing is correct in the context of iron's role in metabolism, but it does not directly relate to pyridoxin.

### Final Answer:
The mismatch is **Zinc - Synthesis of Cytochrome**, as cytochromes are made up of iron, not zinc.

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