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Chapter 9 of 19
Important Questions

Economic Importance of Bacteria and Fungi

ICSE · Class 9 · Biology

Most important questions from Economic Importance of Bacteria and Fungi for ICSE Class 9 Biology board exam 2026. MCQs, short answer, and long answer questions with marks.

42 questions47 flashcards5 concepts

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A labeled diagram illustrating the four main morphological shapes of bacteria: Coccus (spherical), Bacillus (rod-shaped), Vibrio (comma-shaped), and Spirillum (spiral-shaped).
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42 Questions·
multiple choicemultiple correct

Sample Questions

1multiple correct

Which of the following are useful roles of bacteria in medicine? (Select all correct answers)

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Production of antibiotics, Preparation of vaccines, Making serums

Bacteria are useful in medicine for producing antibiotics (like streptomycin), preparing vaccines (killed or weakened bacteria), and making serums containing antitoxins. Causing diseases and food spoilage are harmful roles.

2multiple choice

Yeast is used in bread making because it produces:

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Carbon dioxide gas

Yeast ferments sugar in the dough and produces carbon dioxide gas, which makes the dough rise and gives bread its spongy texture.

3multiple correct

Which of the following methods can preserve food by preventing bacterial growth? (Select all correct answers)

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Refrigeration, Salting, Dehydration

Cold temperatures (refrigeration), salt, and removal of water (dehydration) all prevent bacterial growth. Adding water would actually help bacteria grow.

4multiple choice

The most common edible mushroom cultivated worldwide is:

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Agaricus bisporus

Agaricus bisporus, also known as white button mushroom, is the most common edible mushroom cultivated and eaten worldwide.

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Frequently Asked Questions

What are the important topics in Economic Importance of Bacteria and Fungi for ICSE Class 9 Biology?
Economic Importance of Bacteria and Fungi covers several key topics that are frequently asked in ICSE Class 9 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Economic Importance of Bacteria and Fungi — ICSE Class 9 Biology?
Understand the core concepts first, then work through the 42 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 Economic Importance of Bacteria and Fungi?
There are 42 practice questions available for Economic Importance of Bacteria and Fungi. 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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