Penicillin was discovered by

Question

Accepted Answer

D. {'text': 'Alexander Fleming', 'label': 'D'}

1. NCERT credits the discovery of Penicillin to Alexander Fleming.
2. He observed that a mould inhibited Staphylococci growth in a culture plate.
3. He named the antibiotic after the mould Penicillium notatum.
4. Chain and Florey developed it as an effective drug; all three shared the Nobel Prize in 1945.
_Source: NCERT Class 12 Biology, Ch 8 "Microbes in Human Welfare", §8.2.2_

Answer

{'text': 'Louis Pasteur', 'label': 'A'}

Answer

{'text': 'Ernest Chain and Howard Florey', 'label': 'B'}

Answer

{'text': 'Robert Koch', 'label': 'C'}