Class 8 Science: Microorganisms Friend and Foe Worksheet
This worksheet tests your basic understanding of microorganisms, their beneficial roles, and how they can be harmful in everyday life.
Class 8CBSEScienceeasyPractice
Preview · 10 questions
- Q1. Which of the following is an example of a microorganism?
- Cow
- Bacteria
- Tree
- Human
- Q2. Microorganisms that cause diseases are called:
- Producers
- Decomposers
- Pathogens
- Symbionts
- Q3. Which microorganism is used in the production of bread?
- Algae
- Yeast
- Protozoa
- Virus
- Q4. The process of converting sugar into alcohol by microorganisms is called:
- Photosynthesis
- Respiration
- Fermentation
- Digestion
- Q5. Which of these is NOT a method of food preservation?
- Boiling
- Refrigeration
- Adding salt
- Adding water
+ 5 more in the printable PDF.