MCQ on Class 8 Microorganisms Friends and Foe

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

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

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

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

5. Dengue is caused by a……………

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

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

8. Malaria is caused by ………….

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

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

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

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

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

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

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

16. Spiral-shaped bacteria is called ………

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

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