MCQ on Class 8 Microorganisms Friends and Foe

1. Spiral-shaped bacteria is called ………

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

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

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

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

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

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

8. Malaria is caused by ………….

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

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

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

12. Dengue is caused by a……………

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

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

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

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

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

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