MCQ on Class 8 Microorganisms Friends and Foe

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

2. Malaria is caused by ………….

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

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

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

6. Dengue is caused by a……………

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

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

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

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

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

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

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

14. Spiral-shaped bacteria is called ………

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

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

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

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