Microorganisms friends and foe Worksheet-1

Microorganisms friends and foe Worksheet-1

 

Fill in the blanks:

  1. The living organisms which cannot be seen with naked eyes are called_______.

  2. ________can reproduce only inside the cells of the host organisms.

  3. Common cold, influenza and most coughs are caused by _______.

  4. Typhoid is caused by _____.

  5. _______ is the carrier of malarial parasite.

  6. Microorganisms can be seen with the help of a ________.

  7. Blue-green algae fix ______ directly from air to enhance fertility of soil.

  8. Alcohol is produced with the help of an organism _______.

  9. Cholera is caused by _______.

  10. ______ converts milk into curd.

  11. ______discovered penicillin.

  12. ______ bacteria are found in the root nodules of leguminous plants.

  13. Diseases like dysentery and malaria are caused by _______.

  14. Tuberculosis and typhoid are caused by _______.

  15. Diseases causing microorganisms are called _______.

  16. Amoeba is a type of ______.

  17. Yeast reproduces rapidly and produces ______ gas during respiration.

  18. Bubbles of ______ gas fill the dough after fermentation and increase its volume.

  19. The process of conversion of sugar into alcohols is called _______.

  20. ______ is produced by the body when disease causing microorganisms enters the body.

  21. The microbes which fix nitrogen in the soil are called _______.

  22. ________ discovered the vaccine for small pox.

  23. In India _______ programme is started for the eradication of polio.

  24. Medicines which kill or stop the growth of the disease-causing microorganisms are called ______.

  25. Weakened or dead microbes which are introduced in a healthy body to prevent occurrence of disease are called ______.

  26. Spirogyra and Chlamydomonas are grouped in the category types of ______.

  27. Microbial diseases that can spread from an infected person to a healthy person through air, water, food or physical contact are called ______ disease.

  28. ______ is a disease caused by virus in Okra or bhindi.

  29. Chemicals used to check the growth of microorganisms are _____.

  30. ______ is used as a chemical preservative.

 

Answer:

  1. (microorganism, microorganisms)

  2. (virus, viruses)

  3. (virus, viruses)

  4. (Salmonella typhi, bacteria)

  5. (female Anopheles mosquito, Anopheles mosquitoes)

  6. (microscope)

  7. (nitrogen)

  8. (yeast)

  9. (Bacteria)

  10. (Lactobacillus)

  11. (Alexander Flemming)

  12. (Rhizobium)

  13. (Protozoa, protozoans)

  14. (bacteria)

  15. (pathogens)

  16. (Protozoa, protozoans)

  17. (Carbon dioxide, CO2)

  18. (Carbon dioxide, CO2)

  19. (fermentation)

  20. (antibodies)

  21. (biological nitrogen fixers)

  22. (Edward Jenner)

  23. (Pulse polio)

  24. (antibiotics)

  25. (Vaccine)

  26. (Algae)

  27. (Communicable )

  28. (Yellow mosaic)

  29. (Preservatives, Preservative)

  30. (Sodium benzoate, sodium metabisulphite)