Microorganisms: Friend and Foe Class 8 MCQs Questions with Answers

1. The microorganism which contains chlorophyll

2. The process by which amount of nitrogen remains the same in the atmosphere is known as

3. Which microorganism causes AIDS?

4. Which cannot fix atmospheric nitrogen in the soil?

5. Fungi consist of two main groups of organisms ………….. and moulds.

6. Agar is made from a type of red …………..

7. Alcohol is produced with the help of

8. ……….. are the smallest of all microorganisms.

9. The presence of ………….. and the warmth stimulate rapid growth of the yeast cells.

10. The rod shaped bacteria are called

11. The disease caused by protozoa is

12. The disease caused by fungi is

13. Which of the following drug is an antipyretic?

14. Which bacteria helps in settling of curd?

15. Which of the following is not used as food preservatives?

16. The status of algae in the aquatic food chain is

17. What helps in the rise of bread or dosa dough?

18. Bacteria present in root nodules of pea

19. Which of the following disease is spread due to bacteria?

20. Algae are ………….. like organisms and contain chlorophyll.