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Cyclosporin A — an immunosuppressive drug used in organ transplantation — is produced by:
ALactobacillus
BPenicillium notatum
CTrichoderma polysporum (a fungus)
DSaccharomyces cerevisiae
Answer & Solution
Correct answer: C. Trichoderma polysporum (a fungus)
**Cyclosporin A** = immunosuppressant for organ-transplant patients (prevents rejection). Produced by the fungus **Trichoderma polysporum**. NCERT explicitly cites this bioactive molecule.
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