CBSE Class 8 Science Microorganisms worksheet Set 02

Download Class 8 Science Worksheets for Chapter 02 Microorganisms: Friend or Foe

Access printable practice worksheets for Chapter 02 Microorganisms: Friend or Foe designed to align with the 2026-27 academic syllabus for Class 8 Science. These structured exercises help students evaluate their conceptual understanding and improve exam readiness.

Access Chapter 02 Microorganisms: Friend or Foe Questions and Exercises

View or download the dedicated Chapter 02 Microorganisms: Friend or Foe practice resource below. Engaging with these objective and subjective questions daily ensures continuous academic progress and mastery of the 2026-27 curriculum.

MIDDLE SECTION
 
DEPARTMENT OF SCIENCE
 
Subject :Science
 
Topic : Micro organisms – Friend and Foe 
 
 
Q 1) Name the following:
 
i. Microbes that reproduce only inside the host _______
 
ii. A viral disease ______________
 
iii. An example of a fungi ____________
 
iv. Single celled microbes ______________
 
v. Microorganism that increases soil fertility ________
 
vi. Microbes that could be present in form of colony_________
 
vii. Bacteria which causes anthrax disease_________
 
viii. Any one preservative ________
 
ix. A plant that can show root nodule formation ______
 
Q2) Define the following:
 
A. Microbes _________________________________________________________________
 
B. Pathogen _________________________________________________________________
 
C. Nitrogen Fixation ____________________________________________________________
 
D. Pasteurization ______________________________________________________________
 
E. Preservatives ______________________________________________________________
 
Q3. Give two uses of microorganisms in the following areas:
 
i) Food Industry ________________________________________________________
 
ii) Medicinal Use __________________________________________________________
 
iii) Environment related _____________________________________________________
 
Q4. Why milk in polypacks does not get spoiled?
 
__________________________________________________________________________
 
___________________________________________________________________________
 
Q5. List few differences between Antibiotics and Antibodies?
 
_________________________________________________________________________
 
___________________________________________________________________________
 
Q6. List some harmful effects of microorganism?
 
_________________________________________________________________________
 
_____________________________________________________________________
 
Q7. How can we control the spread of diseases caused by mosquitoes?
 
________________________________________________________________________
 
______________________________________________
 
Q8 .Why does sugar solution with yeast powder become alcoholic in taste?
 
__________________________________________________________________________
 
Q9. Purvi, a class VIII student was asked to submit a project report on mosquito transmitted diseases. She visited a nearby hospital where her aunt was staffed as a nurse. Her aunt took her to a patient suffering from malaria. Megha talked to the patient and asked him about his health and also took some flowers for him.
 
(a) Name the mosquito that spreads malaria. _________________________
 
(b) What is the name given to such organisms that transmit the diseases from infected to healthy person? _________________________________________________
 
(c) Identify two important values as shown by Megha_______________________________________________________________________

 

 

Please click on below link to download CBSE Class 8 Science Microorganisms worksheet Set B

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Exam Preparation Worksheet for Class 8 Science Chapter 02 Microorganisms: Friend or Foe

Chapter Practice Questions for Class 8 Science

Review targeted practice exercises for Class 8 Science Chapter 02 Microorganisms: Friend or Foe. Curated to match official CBSE guidelines, these downloadable PDF sheets support daily revision and core concept reinforcement.

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FAQs

Where can I download the latest PDF for CBSE Class 8 Science Microorganisms worksheet Set 02?

You can download the teacher-verified PDF for CBSE Class 8 Science Microorganisms worksheet Set 02 from StudiesToday.com. These practice sheets for Class 8 Science are designed as per the latest CBSE academic session.

Are these Science Class 8 worksheets based on the 2026-27 competency-based pattern?

Yes, our CBSE Class 8 Science Microorganisms worksheet Set 02 includes a variety of questions like Case-based studies, Assertion-Reasoning, and MCQs as per the 50% competency-based weightage in the latest curriculum for Class 8.

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Yes, we have provided detailed solutions for CBSE Class 8 Science Microorganisms worksheet Set 02 to help Class 8 and follow the official CBSE marking scheme.

How does solving CBSE Class 8 Science Microorganisms worksheet Set 02 help in exam preparation?

Daily practice with these Science worksheets helps in identifying understanding gaps. It also improves question solving speed and ensures that Class 8 students get more marks in CBSE exams.

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