Chapter 7 The Microbial World Review Questions MCQs
Question 1. Microbes are
- Living
- Non-living
- Inorganic compounds
- None of these
Answer: 1. Living
Question 2. Microbes are visible by
- Naked eye
- Microscope
- Hand lens
- Spectacle
Answer: 2. Microscope
Question 3. Bacteria, viruses, and protozoa are
- Animals
- Plants
- Microbes
- Carriers
Answer: 3. Microbes
Question 4. The application of microbial metabolism to transform simple raw materials into valuable products is called
- Biocatalysis
- Tissue culture
- Genetic engineering
- Fermentation
Answer: 4. Fermentation
Question 5. An ideal place of survival of microbes
- Damp places
- Sunny places
- Dry places
- Rocky surfaces
Answer: 1. Damp places
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Question 6. The microbes that can produce their own food
- Protozoa
- Virus
- Algae
- Bacteria
Answer: 3. Algae
Question 7. Microbes prefer the temperature for growth
- 0°C-5°c
- 25°C-35°c
- 100°C-110°c
- Sub-zero temperature
Answer: 2. 25°C-35°c
Question 8. For microscope observation, specimens are generally
- Moist
- Heated
- Stained
- Acidified
Answer: 3. Stained
Question 9. Which one is not a microbe?
- Bacteria
- Fungus
- Small plants
- Virus
Answer: 3. Small plants
Question 10. Microbes may be
- Beneficial or harmful
- Always Harmful
- Always Beneficial
- All of these
Answer: 1. Beneficial or harmful
Question 11. Curd, milk, cheese, and butter are produced with the help of
- Yeast
- Acetobacter
- Penicillium
- Streptococcus
Answer: 4. Streptococcus
Question 12. Antibiotics are mostly produced commercially from
- Viruses
- Saprophytic bacteria
- Parasitic host
- All of these
Answer: 2. Saprophytic bacteria
Question 13. Louis Pasteur is famous for the discovery of
- Bacteria
- Life
- Vaccine of hydrophobia
- Antigen
Answer: 3. Vaccine for hydrophobia
Question 14. Bacteria are placed under the kingdom
- Plantae
- Monera
- Protista
- Akaryota
Answer: 2. Monera
Question 15. Pseudopodia is the locomotory structure of
- Bacteria
- Algae
- Protozoa
- Virus
Answer: 3. Protozoa
Question 16. Hyphae is a term associated with
- Fungi
- Algae
- Microbes
- Virus
Answer: 1. Fungi
Question 17. Penicillium is a
- Fungus
- Algae
- Medicine
- Fertilizer
Answer: 1. Fungus
Question 18. An example of colonial algae is
- Chlamydomonas
- Volvox
- Spirogyra
- Mucor
Answer: 2. Volvox
Question 19. Biofertilizers include
- Cyanobacteria
- Mycorrhizal fungi
- Nitrifying bacteria
- All of these
Answer: 4. All of these
Question 20. Virus can be seen under
- Electron microscope
- Simple light microscope
- Compound light microscope
- None of these
Answer: 1. Electron microscope
Question 21. The nucleic acid of the virus is
- Both DNA and RNA
- Either DNA or RNA
- Only rna
- Only DNA
Answer: 2. Either DNA or RNA
Question 22. Viruses are
- Unicellular
- Multicellular
- Acellular
- Prokaryotes
Answer: 3. Acellular
Question 23. The word ‘virus’ in Latin means
- Poison
- Sweet
- Dangerous
- Friend
Answer: 1. Poison
Question 24. Which is not a bacterial disease?
- Tuberculosis
- Tetanus
- Cholera
- Aids
Answer: 4. Aids
Question 25. Which is a protozoan disease?
- Polio
- Malaria
- Ringworm
- Polio
Answer: 2. Malaria
Question 26. Diarrhea is transmissible through
- Air
- Carrier
- Water
- Food
Answer: 3. Water
Question 27. Amoebiasis is caused by a
- Protozoa
- Virus
- Fungus
- Algae
Answer: 1. Protozoa
Question 28. Rhizobium is a
- Parasite
- Symbiont
- Free-living
- Host
Answer: 2. Symbiont
Question 29. In humans, e. Coli supplies
- Vitamin b12
- Vitamin c
- Nitrogen
- Protein
Answer: 1. Vitamin b12
Question 30. Which of the following is not a communicable disease?
- Cancer
- Cholera
- Chickenpox
- Malaria
Answer: 1. Cancer
Question 31. Saprophytes draw nourishment from
- Living organism
- Parasites
- Dead organic matter
- Metallic substances
Answer: 3. Dead organic matter
Question 32. Which is not a nitrogen-fixing bacteria?
- Clostridium
- E. Coli
- Azotobqcter
- Y. Pestis
Answer: 2. E. Coli
Question 33. The breakdown of the nitrogenous compounds to ammonia is
- Ammonification
- Nitrification
- Nitrogen fixation
- Denitrification
Answer: 1. Ammonification
Question 34. Curd forming microorganisms is
- Lactobacillus
- Penicillium
- Rhizobium
- Metha no-bacteria
Answer: 1. Lactobacillus
Question 35. Which of the following diseases is not caused by bacteria?
- Cholera
- Typhoid
- Measles
- Tuberculosis
Answer: 3. Measles
Question 36. Antibiotics may be produced from
- Microbes
- Animals
- Plants
- Minerals
Answer: 1. Microbes
Question 37. The microorganisms which can multiply and reproduce only inside the cells of other organisms are
- Protozoa
- Fungi
- Virus
- Bacteria
Answer: 3. Virus
Question 38. Antibiotics are not effective against
- Bacteria
- Fungus
- Microbes
- Virus
Answer: 4. Virus
Question 39. Which of the following is not an area where microorganisms are employed?
- Preparation of drugs
- Recycling of materials in nature
- Preparation of food by photosynthesis
- Increasing the fertility of the soil
Answer: 3. Preparation of food by photosynthesis
Question 40. Proper vaccination can prevent the spread
- Bacteria
- Virus
- Protozoa
- Algae
Answer: 2. Virus
Question 42. Refrigeration helps in food
- Preservation
- Degradation
- Nitrification
- Preparation
Answer: 1. Preservation
Question 43. A pathogenic protozoan residing in the human digestive tract is
- T. Gambiense
- P. Ovale
- Trichonympha
- Giardia intestinalis
Answer: 4. Giardia intestinalis
Question 44. Which among the following vitamin is/are produced using microbes?
- Vit b12
- Carotene
- Riboflavin
- All of these
Answer: 4. All of these
Question 45. Which one is a viral disease ?
- Mumps
- Tetanus
- Pneumonia
- Ringworm
Answer: 1. Mumps
Chapter 7 The Microbial World Fill in the blanks
Question 1. The algae___________is used as food in the space station.
Answer: Chlorella
Question 2. Bread mold is a type of ___________
Answer: Fungus
Question 3. Microbes have survived over ___________ billion years on earth.
Answer: 3.5
Question 4. ___________ microbes can survive in presence of oxygen.
Answer: Aerobic
Question 5. ___________ are the microbes that can produce their own food.
Answer: Algae
Question 6. The process of coloring specimens for microscopic observation is known as ___________.
Answer: Staining
Question 7. An example of the kingdom Protista is ___________.
Answer: Protozoa
Question 8. Bacterial nucleus is known as___________ .
Answer: Nucleoid
Question 9. Membrane-bound cell organelle is absent in ___________.
Answer: Bacteria
Question 10. In 1674,___________ proved the existence of bacteria.
Answer: Leeuwenhock
Question 11. Bacteria are placed under the kingdom ___________
Answer: Monera
Question 12. Pseudopodia is the locomotory organ of some ___________.
Answer: protozoa
Question 13. Yeast is a unicellular ___________.
Answer: Fungus
Question 14. In fungus, a large number of ___________ together form mycelium.
Answer: Hyphae
Question 15. Fungi can not synthesize their food due to lack of ___________.
Answer: Chloroplast
Question 16. Spirogyra is a ___________ filamentous algae.
Answer: Multicellular
Question 17. Algae are ___________ in color.
Answer: Green
Question 18. Hydrophobia is a ___________ disease.
Answer: Viral
Question 19. Mushroom is a ___________.
Answer: Fungus
Question 20. Parasites live in association with ___________.
Answer: Host
Question 21. Vitamin deficiency may be caused by the death of beneficial ___________ within our intestine.
Answer: Bacteria
Question 22. Rhizobium lives in the root nodules of ___________ plants.
Answer: Leguminous
Question 23. Lichen has an association of ___________ and fungus.
Answer: algae
Question 24. In the case of symbiosis both organisms of an association are mutual ___________.
Answer: Benefited
Question 25. The process of surviving on decomposed organic wastes is known as ___________.
Answer: Saprophytes
Question 26. Clostridium is a ___________ fixing bacteria.
Answer: Nitrogen
Question 27. Alcohol is produced from sugar by the fungus ___________
Answer: Yeast
Question 28. Pasteurization is performed to preserve ___________.
Answer: Milk
Question 29. The antibiotic is produced from the fungus ___________ Penicillium.
Answer: Penicillin
Question 30. The natural form of resistance against infection is called ___________.
Answer: Immunity
Chapter 7 The Microbial World Identify As ‘True’ Or ‘False’
Question 1. is not seen by the naked eye.
Answer: True
Question 2. Microbes have most above.
Answer: False
Question 3. The aerobic microbe can survive in absence of oxygen.
Answer: False
Question 4. Bacteria belong to the kingdom Protista.
Answer: False
Question 5. Some microbes can produce their own food.
Answer: True
Question 6. Staining is required for the microscopic observation of specimens.
Answer: False
Question 7. Bacteria, fungi, and plants are microbes.
Answer: False
Question 8. All microbes are harmful.
Answer: False
Question 9. Plastid is absent in bacteria.
Answer: False
Question 10. Rotest Koch discovered the pathogens of malaria.
Answer: False
Question 11. A few protozoa are multicellular.
Answer: False
Question 12. All protozoa possess cilia or flagella
Answer: False
Question 13. Fungi can grow either in the presence or absence of sunlight.
Answer: True
Question 14. Spirogyra is unicellular algae.
Answer: False
Question 15. viruses are acellular.
Answer: True
Question 16. Sibiu. lost’s body viruses behave as inert particles.
Answer: True
Question 17. Influenza and mumps are viral diseases.
Answer: True
Question 18. Ringworm is an animal.
Answer: False
Question 19. AIDS may be transmitted by coughing and sneezing.
Answer: False
Question 20. Rhizobium is a symbiotic protozoan.
Answer: False
Question 21. Lichen is a parasite.
Answer: False
Question 22. Plants can not take atmospheric nitrogen directly from the air.
Answer: False
Question 23. Soyabean is a leguminous plant.
Answer: True
Question 24. Bacteria can convert vinegar to alcohol.
Answer: False
Question 25. The vaccine is an antibiotic drug.
Answer: False
Question 26. Microbes may be used in the treatment of waste materials.
Answer: True
Chapter 7 The Microbial World Match The Column
1.
Column – A | Column – B |
A. Bacteria | 1. Fungi |
B. Protozoa | 2. Plantae |
C. Fungus | 3. Monera |
D. Algae | 4. Protista |
Answer: A-3,B-4,C-1,D-2
2.
Column – A | Column – B |
A. Bacteria | 1. living or non-living |
B. Virus | 2. mycelium or hyphae |
C. Fungi | 3. pseudopodia or cilia |
D. Protozoa | 4. cell wall and nucleoid |
Answer: A-4,B-1,C-2,D-3
3.
Column – A | Column – B |
A. Malaria | 1. Through food |
B. Tuberculosis | 2. Through vector |
C. Amoebiasis | 3. Through blood |
D. Hepatitis | 4. Through cough |
Answer: A-2,B-4,C-1,D-3
4.
Column – A | Column – B |
A. Plasmodium | 1. Saprophyte |
B. Lichen | 2. Parasite |
C. Clostridium | 3. Free-living |
D. Mucor | 4. Symbiotic |
Answer: A-2,B-4,C-1,D-3
5.
Column – A | Column – B |
A. Barber’s itch | 1. Bacteria |
B. Diarrhoea | 2. Virus |
C. Encephalitis | 3. Fungi |
D. Leprosy | 4. Protozoans |
Answer: A-3,B-4,C-2,D-1
6.
Column =- A | Column- B |
A. Through drinking water | 1. AIDS |
B.Through vector | 2. Amoebiosis |
C. Through blood | 3. Kalazar |
D. Through air | 4. Tuberculosis |
Answer: A-2,B-3,C-1,D-4