CBSE Class 8 Science Microorganisms worksheet Set 01

Official Class 8 Science Worksheets: Chapter 02 Microorganisms: Friend or Foe

Explore reliable practice materials for Chapter 02 Microorganisms: Friend or Foe tailored for Class 8 learners. Utilizing these Science worksheets ensures thorough preparation and strengthens problem-solving speed for upcoming school assessments.

Chapter-wise Practice Material: Chapter 02 Microorganisms: Friend or Foe

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
 
SUBJECT: SCIENCE 
 
TOPIC: MICROORGANISMS STD VIII
 
Q.1. Why are viruses considered to be on the border line between the living and the nonliving things?
 
-----------------------------------------------------------------------------------------------------------
 
-----------------------------------------------------------------------------------------------------------
 
Q.2. Why does bread dough rise when yeast is added to it?
 
-----------------------------------------------------------------------------------------------------------
 
-----------------------------------------------------------------------------------------------------------
 
Q.3. Write any two ways in which microorganisms are useful and harmful to us.
 
-----------------------------------------------------------------------------------------------------------
 
-----------------------------------------------------------------------------------------------------------
 
-----------------------------------------------------------------------------------------------------------
 
Q.4.What is the role of microorganisms in cleaning the environment and in sewage treatment?
 
-----------------------------------------------------------------------------------------------------------
 
-----------------------------------------------------------------------------------------------------------
 
Q.5.What is an antibiotic?
 
-----------------------------------------------------------------------------------------------------------
 
-----------------------------------------------------------------------------------------------------------

Q.6.What is the importance of adding oil to pickles?

---------------------------------------------------------------------------------------------------------
 
---------------------------------------------------------------------------------------------------------
 
Q.7.Why do the food items kept in the fridge remain fresh for a long period of time?
 
-----------------------------------------------------------------------------------------------------------
 
Q.8.Why does milk in poly packs not get spoiled easily?
 
-----------------------------------------------------------------------------------------------------------
 
-----------------------------------------------------------------------------------------------------------
 
Q.9.What is nitrogen cycle?
 
-----------------------------------------------------------------------------------------------------------
 
-----------------------------------------------------------------------------------------------------------
 
Q.10.Name two parasitic protozoa that cause disease in human beings.
 
-----------------------------------------------------------------------------------------------------------
 
Q.11.How do vaccines work in our body?
 
-----------------------------------------------------------------------------------------------------------
 
-----------------------------------------------------------------------------------------------------------
 
Q.12. Identify the following.
 
a. A disease caused by fungi in wheat plant.__________________________________
 
b. The mode of transmission of Hepatitis A.__________________________________
 
c. Identify the round structure found on the roots of leguminous plant shown in the diagram below.
 
CBSE Class 8 Science Microorganisms worksheet Set A
 
 
 

 

 

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

Free study material for Science

Practice Worksheet and Study Resources 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.

Expert Practice Material for Class 8 Science

Cross-reference your completed exercises with comprehensive NCERT solutions for Class 8 Science to ensure absolute clarity across all sub-topics in this chapter.

Complete Your Chapter Revision

Explore our broader library of printable assignments, chapter notes, and mock tests designed to support continuous revision and secure higher marks in CBSE assessments.

FAQs

Where can I download the latest PDF for CBSE Class 8 Science Microorganisms worksheet Set 01?

You can download the teacher-verified PDF for CBSE Class 8 Science Microorganisms worksheet Set 01 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 01 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.

Do you provide solved answers for CBSE Class 8 Science Microorganisms worksheet Set 01?

Yes, we have provided detailed solutions for CBSE Class 8 Science Microorganisms worksheet Set 01 to help Class 8 and follow the official CBSE marking scheme.

How does solving CBSE Class 8 Science Microorganisms worksheet Set 01 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.

Is there any charge for the Class 8 Science practice test papers?

All our Class 8 Science practice test papers and worksheets are available for free download in mobile-friendly PDF format. You can access CBSE Class 8 Science Microorganisms worksheet Set 01 without any registration.