Multiple choice Name the fungi producing antibiotics. Penicillium expansum Penicillium digibatum Penicillium itallicum Penicillium notatum Reveal answer Fill a bubble to check yourself D Correct answer Explanation Penicillium notatum is the original fungus from which Alexander Fleming isolated penicillin in 1928, revolutionizing medicine. Other Penicillium species may produce different compounds, but notatum is famous for the first antibiotic discovery.