Penicillin is produced by

Options

A. P. chrysogenum
B. P. viridicatum
C. p. expansum
D. P. claviforme

Answer

**Step-by-Step Solution:**

1. **Understanding Penicillin**:
- Penicillin is an antibiotic that is effective against bacteria. It works by interfering with the synthesis of the bacterial cell wall, which inhibits bacterial growth and can kill bacteria.

2. **Identifying the Source of Penicillin**:
- Penicillin is produced by certain species of fungi belonging to the genus Penicillium.

3. **Analyzing the Given Options**:
- The options provided are:
- A) Penicillium chrysogenum
- B) Penicillium viridicatum
- C) Penicillium expansum
- D) Penicillium claviform

4. **Evaluating Each Option**:
- **Option A: Penicillium chrysogenum**: This species is known for being the primary source of penicillin and is commonly found in damp environments.
- **Option B: Penicillium viridicatum**: This species is not known for penicillin production.
- **Option C: Penicillium expansum**: This species is a plant pathogen and is not involved in penicillin production.
- **Option D: Penicillium claviform**: This species is also a plant pathogen and does not produce penicillin.

5. **Conclusion**:
- Based on the evaluation, the correct answer is **A) Penicillium chrysogenum**, as it is the species responsible for the production of penicillin.

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