MCQ on Class 8 Microorganisms Friends and Foe

1. The study of microorganisms is known as ………

2. Edward Jenner discovered the vaccine for ………….. in 1798.

3. The plant disease called ‘citrus canker’ is caused by …….

4. The spoiling of food is a ………..change

5. Spiral-shaped bacteria is called ………

6. The antibiotic ‘penicillin’ was discovered  ‘Penicillium’ which is a ………….

7. Malaria is caused by ………….

8. Spherical-shaped bacteria are called ……..

9. Dengue is caused by a……………

10. Microorganisms have a hard outer covering called ………

11. Rod-shaped bacteria is called ………..

12. Who discovered the bacteria Bacillus anthracis which causes anthrax disease in animals in 1876 ?

13. The plant disease called ‘yellow vein mosaic of OKRA (bhindi)’ is caused by a ………

14. The insect which transmits disease-causing micro-organisms to humans is called a ………..

15. Scientists who study microorganisms are known as ………

16. The plant disease called ‘rust of wheat’ is caused by …….

17. Micro-organisms that cause diseases are called………………

18. Bacteria and fungi are used to make medicines called……….