Grade 8 Worksheet

 Worksheet: Microorganisms - Friend and Foe

​A. Short Answer Type Questions (1-2 sentences)

​Question 1: What is the primary role of nitrogen-fixing bacteria, and where are they commonly found in plants?

​Question 2: Name one microorganism used in the commercial production of alcohol and describe the process.

​B. Brief Answer Type Questions (3-5 sentences)

​Question 3: Explain the term 'pathogen' and give two examples of diseases caused by different types of pathogens in humans.

​Question 4: Describe the difference between a communicable disease and a non-communicable disease, using an example for each.

​Question 5: Write a short note on the role of microorganisms in cleaning up the environment.

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