Main pigment involved in transfer of electrons in photosynthesis is

Options

A. Phytochrome
B. Cytochrome
C. `FAD`
D. Both A and B.

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the main pigment involved in the transfer of electrons during photosynthesis.

2. **Identifying the Options**: The options provided are:
- A) Phytochrome
- B) Cytochrome
- C) FAD
- D) Both A and B

3. **Analyzing Each Option**:
- **Phytochrome**: This pigment is primarily involved in the regulation of plant growth and development in response to light, but it is not directly involved in electron transfer during photosynthesis.
- **Cytochrome**: This is a heme-containing protein that plays a crucial role in the electron transport chain during photosynthesis, specifically in the thylakoid membranes of chloroplasts.
- **FAD**: Flavin adenine dinucleotide is a coenzyme involved in various biological reactions, but it is not the main pigment responsible for electron transfer in photosynthesis.
- **Both A and B**: Since phytochrome is not involved in electron transfer, this option is incorrect.

4. **Conclusion**: The main pigment involved in the transfer of electrons in photosynthesis is **Cytochrome**.

5. **Final Answer**: The correct answer is **B) Cytochrome**.

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