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Class 8 Science
Micro-Organisms: Friend And Foe
Quiz 1
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which bacteria causes citrus canker.
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Lactobacillus
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Aspergillus
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Paramecium
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Xanthomonas
Food preservation is done by addition of
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acids
0%
water
0%
microbes
0%
salt
Ameoba is a type of
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unicellular plant
0%
unicellular animal
0%
multicellular animal
0%
multicellular plant
Oscillatoria is an example of
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Blue Green algae
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Brown algae
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Green algae
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Golder brown algae
Who invented Penicillin?
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Louis Pasteur
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Robert Koch
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Edward Jenner
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Alexander Fleming
Match the column
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p -> ii, q -> iii, r -> iv , s ->i
0%
p -> iv, q -> i, r -> ii , s ->iii
0%
p -> ii, q -> iii, r -> i , s ->iv
0%
p -> ii, q -> i, r -> iv , s ->iii
The disease caused by a protozoan and spread by an insect is
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dengue
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malaria
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polio
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measles
__________________ is a bacterium that sours milk and is used to makes curd from milk
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Lactobacillus
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Aspergillus
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Paramecium
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None of these
Which of the following is incorrect about Virus
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Vaccine is used to protect us from Virus. Vaccines consist of dead and weakened microbes and it helps the body in producing antibodies against the virus and protecting human body
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Virus are on the borderline of living and non- living.
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typhoid is caused by Virus
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Viruses can reproduce only inside the bodies of other organisms, which mean they need a host
Which of the following reproduces only inside a host cell?
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Bacteria
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Amoeba
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Virus
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Fungus.
Who discovered Fermentation?
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Louis Pasteur
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Robert Koch
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Edward Jenner
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Alexander Fleming
Pasteurization of Milk generally occurs at
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62.8°C for 30 min
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60.8°C for 30 min
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8 to 61 °C for 60 min
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8 to 62 °C for 60 min
Mushroom belongs to
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Virus
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Bacteria
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Fungi
0%
Pathogens
Which of the following causes plague?
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Yersinia pestis
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stolonic hyphae
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Acetabulaia
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Salmonella hyphae
Bacteria were discovered by
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Koch
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J Lister
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L Pasteur
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Leeuwenhoek
A disease in human beings is not caused by virus is _______.
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Polio
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Chicken Pox
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Influenza
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typhoid
Virus is discovered by _____
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L Pasteur
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Ivanowski
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Koch
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Leeuwenhoek
Protein coat of Virus is called
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Capsid
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Peplos
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Envelop
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Nucleoid
Paramecium belongs which group
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Protozoa
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Algae
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Fungi
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Bacteria
Leprosy is because of
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Monocystis
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TMV
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Salmonella
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Mycobacterium leprae
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