Penicillin was discovered by chance by:

AErnest Chain now

BHoward Florey now

CLouis Pasteur now

DAlexander Fleming

Answer & Solution

Correct answer: D. Alexander Fleming

1. The discovery came while working on Staphylococci. 2. A mould had contaminated the culture. 3. The discoverer was Alexander Fleming. _Source: syllabus Biology, Chapter 10, Microbes in Human Welfare._

Practise this question with Quill — CBSE Class 12 (Science) →

Keep practising Microbes in Human Welfare

Browse all Microbes in Human Welfare questions for CBSE Class 12 (Science), or explore more Biology topics.

Start a Microbes in Human Welfare lesson →

Related questions

Which microbes serve as an important biofertiliser in paddy fields?What does the fungal partner in mycorrhiza absorb from soil for the plant?Many members of which genus form mycorrhiza with plants?Which two bacteria fix atmospheric nitrogen while free-living in soil?What are biofertilisers?Most baculoviruses used as biocontrol agents belong to which genus?Which free-living root-ecosystem fungus is a biocontrol agent of plant pathogens?Which crop carries Bt toxin genes introduced by genetic engineering?