MCQ on Class 8 Microorganisms Friends and Foe

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

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

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

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

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

6. Dengue is caused by a……………

7. Malaria is caused by ………….

8. Spiral-shaped bacteria is called ………

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

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

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

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

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

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

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

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

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

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