Trichoderma polysporum yields an important bioacitve compound. Which is used as immunosppressive agent in organ transplantion . This compound is .

Options

A. Polysporin
B. Cyclosporin
C. Pentacyclosprin
D. Cyclohydrosporin

Answer

### Step-by-Step Solution:

1. **Identify the Organism**: The question mentions "Trichoderma polysporum," which is a type of fungus.

2. **Understand the Function of the Fungus**: Trichoderma polysporum is known for producing bioactive compounds that have therapeutic uses.

3. **Determine the Specific Compound**: The specific bioactive compound produced by Trichoderma polysporum that is relevant to the question is Cyclosporin A.

4. **Explain the Use of Cyclosporin A**: Cyclosporin A is an immunosuppressive agent used in organ transplantation. It helps prevent the rejection of transplanted organs by suppressing the immune response of the recipient's body.

5. **Summarize the Importance**: The use of Cyclosporin A is crucial in organ transplants as it allows the body to accept the new organ without attacking it as a foreign body.

### Final Answer:
The compound produced by Trichoderma polysporum that is used as an immunosuppressive agent in organ transplantation is **Cyclosporin A**.

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