SSC (English Medium) Class 9Maharashtra State Board
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Balbharati solutions for Class 9 Science and Technology chapter 8 - Useful and Harmful Microbes

Balbharati Class 9 Science and Technology

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Balbharati Balbharati Class 9 Science and Technology

Balbharati Class 9 Science and Technology - Shaalaa.com

Chapter 8: Useful and Harmful Microbes

Exercise

Chapter 8: Useful and Harmful Microbes Exercise Exercise solutions [Page 95]

Exercise | Q 1.1 | Page 95

Complete the statement using the proper option from those given below. Explain the statement. 

(mycotoxins, budding, rhizobium) 

Yeast reproduces asexually by the  __________ method. 

Exercise | Q 1.2 | Page 95

Complete the statement using the proper option from those given below. Explain the statement. 

(mycotoxins, budding, rhizobium) 

Toxins of fungal origin are called ___________

Exercise | Q 1.3 | Page 95

Complete the statement using the proper option from those given below. Explain the statement. 

(mycotoxins, budding, rhizobium) 

Leguminous plants can produce more proteins due to _________

Exercise | Q 2 | Page 95

Write the names of microbes found in following food materials. 

yoghurt, bread, root nodules of leguminous plants, idli, dosa, spoiled potato curry. 

Exercise | Q 3.1 | Page 95

Identify the odd word out and say why it is the odd one? 

Pneumonia, diphtheria, chicken pox, cholera. 

Exercise | Q 3.2 | Page 95

Identify the odd word out and say why it is the odd one? 

Lactobacilli, rhizobia, yeast, clostridia. 

Exercise | Q 3.3 | Page 95

Identify the odd word out and say why it is the odd one?

Root rot, rust (tambera), rubella, mozaic.

Exercise | Q 4.1 | Page 95

Give scientific reason.

Foam accumulates on a the surface of ‘dal’ kept for a long time in summer.

Exercise | Q 4.2 | Page 95

Give scientific reason. 

Why are naphthalene balls kept with clothes to be put away. 

Exercise | Q 5 | Page 95

Write down the modes of infection and the preventive measures against fungal diseases.

Exercise | Q 6 | Page 95

Match the pairs. 

 ‘A’ group  ‘B’ group
 1. Rhizobium  a. Food poisoning 
2. Clostridium  b. Nitrogen fixation 
3. Penicillium  c. Bakery products 
4. Yeast  d. Production of     antibiotics 
Exercise | Q 7.1 | Page 95

Answer the following question. 

Which vaccines are given to infants? Why? 

Exercise | Q 7.2 | Page 95

Answer the following question.

How is a vaccine produced? 

Exercise | Q 7.3 | Page 95

Answer the following question.

How do antibiotics cure disease? 

Exercise | Q 7.4 | Page 95

Answer the following question.
Are the antibiotics given to humans and animals the same? Why? 

Exercise | Q 7.5 | Page 95

Answer the following question.

Why is it necessary to safely store the pathogens of a disease against which vaccines are to be produced? 

Exercise | Q 8.1 | Page 95

Answer the following question in brief. 

What are ‘broad spectrum antibiotics’? 

Exercise | Q 8.2 | Page 95

Answer the following question in brief. 

What is fermentation? 

Exercise | Q 8.3 | Page 95

Answer the following question in brief. 

Define ‘Antibiotic’

Chapter 8: Useful and Harmful Microbes

Exercise

Balbharati Balbharati Class 9 Science and Technology

Balbharati Class 9 Science and Technology - Shaalaa.com

Balbharati solutions for Class 9 Science and Technology chapter 8 - Useful and Harmful Microbes

Balbharati solutions for Class 9 chapter 8 (Useful and Harmful Microbes) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the Maharashtra State Board Balbharati Class 9 Science and Technology solutions in a manner that help students grasp basic concepts better and faster.

Further, we at Shaalaa.com provide such solutions so that students can prepare for written exams. Balbharati textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in Class 9 Science and Technology chapter 8 Useful and Harmful Microbes are Other Harmful Micro Organisms, Harmful Micro-organisms, Antibiotics, Concept of Useful Micro-organisms.

Using Balbharati Class 9 solutions Useful and Harmful Microbes exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in Balbharati Solutions are important questions that can be asked in the final exam. Maximum students of Maharashtra State Board Class 9 prefer Balbharati Textbook Solutions to score more in exam.

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