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Important Questions

Microbes in Human Welfare

ICSE · Class 12 · Biology

Most important questions from Microbes in Human Welfare for ICSE Class 12 Biology board exam 2026. MCQs, short answer, and long answer questions with marks.

60 questions31 flashcards5 formulas

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An infographic illustrating the different types of microbes (bacteria, fungi, viruses, protozoa, prions) with representative examples and their general characteristics or shapes.
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60 Questions·
multiple choice

Sample Questions

1multiple choice

Roquefort cheese gets its distinctive flavour from which microorganism?

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Penicillium roquefortii

Penicillium roquefortii is a blue-green mould that ripens Roquefort cheese, giving it its unique flavour and characteristic blue-green veining.

2multiple choice

Who discovered Penicillin?

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Alexander Fleming

Alexander Fleming discovered Penicillin in 1928 when he noticed that Penicillium notatum mould inhibited the growth of Staphylococcus bacteria on his culture plate.

3multiple choice

In which year was Penicillin discovered?

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1928

Alexander Fleming discovered Penicillin in 1928. Though he made the discovery, it was Florey and Chain who developed it into a usable drug in the 1940s.

4multiple choice

Streptomycin is an antibiotic produced by which microorganism?

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Streptomyces griseus

Streptomycin is an antibiotic produced by the soil bacterium Streptomyces griseus. It was the first antibiotic effective against tuberculosis.

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Frequently Asked Questions

What are the important topics in Microbes in Human Welfare for ICSE Class 12 Biology?
Key topics in Microbes in Human Welfare include Microbes in Food Industry, Industrial Chemicals and Enzymes from Microbes, Bt Toxin Mechanism of Action. These are the concepts ICSE Class 12 examiners draw on most — study them first, then practise related questions.
How to score full marks in Microbes in Human Welfare — ICSE Class 12 Biology?
Understand the core concepts first, then work through the 60 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.
How many important questions are there in Microbes in Human Welfare?
There are 60 practice questions available for Microbes in Human Welfare. These cover multiple question types including MCQs, short answer, and long answer questions.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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