MCQ on Class 8 Microorganisms Friends and Foe

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

2. Spiral-shaped bacteria is called ………

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

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

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

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

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

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

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

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

11. Dengue is caused by a……………

12. Malaria is caused by ………….

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

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

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

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

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

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