The culture and fungal invader in discovery of penicillin by Alexander Fleming are

Vibrio cholerae and Penicillium requeforti

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Staphylococcus aureus and Penicillium notatum

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Eacherichia coli and Penicillium chrysogenum

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Clostridium tetani and Penicillium chrysogenum

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Solution

The correct option is D Staphylococcus aureus and Penicillium notatum
The discovery of Penicillin was a case of serendipity and it was observed on a culture plate of Staphylococcus aureus that was contaminated by a fungus species.
So, the correct option is "Staphylococcus aureus and Penicillium notatum".

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Assertion: While working on Staphylococci, Alexander Fleming observed that Penicillium notatum inhibits the growing of bacteria.

Reason: The inhibiting chemical was commercially extracted and its full potential was established by Alexander Fleming

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