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Free download in PDF Microorganisms Friend and Foe Multiple Choice Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
(1)
Name the Living organism which we cannot seen by naked eye.
[A]
Microorganisms
[B]
Lyophobic organisms
[C]
Chromic organisms
[D]
Fermentation
(2)
Name the microorganisms which require host cells to reproduce and complete their life cycle.
[A]
Virus
[B]
Fungi
[C]
Bacteria
[D]
Algae
(3)
Penicillium and Aspergillus are examples of __________
[A]
Fungi
[B]
Bacteria
[C]
Algae
[D]
None
(4)
The yeast multiply by a process called
[A]
Budding
[B]
Spore formation
[C]
Binary fission
[D]
None of these
(5)
The following is an antibiotics
[A]
Sodium bicarbonate
[B]
Streptomycin
[C]
Alcohol
[D]
Yeast
(6)
The algae commonly used as fertilizers are called
[A]
Blue green algae
[B]
Diatoms
[C]
Staphylococcus
[D]
None of these
(7)
The bread dough rises because of
[A]
Heat
[B]
Growth of yeast cells
[C]
Kneading
[D]
None of these
Answer: Growth of yeast cells
(8)
The vaccine for smallpox was discovered by
[A]
Edward Jenner
[B]
Sir Ronald Ross
[C]
Robert Koch
[D]
None of these
(9)
The bacterium which promote the formation of curd
[A]
Breadmould
[B]
Lactobacillus
[C]
Rhizobium
[D]
Spirogyra
(10)
The bacterium Bacillus Anthracis was discovered by
[A]
Louis Pasteur
[B]
Edward Jenner
[C]
Robert Koch
[D]
None of these
(11)
Carrier of malaria causing protozoan is
[A]
Female Anopheles Mosquito
[B]
Cockroach
[C]
Butterfly
[D]
Housefly
Answer: Female Anopheles Mosquito
(12)
The process of conversion of sugar into alcohol is called
[A]
Fermentation
[B]
Nitrogen fixation
[C]
Infection
[D]
None of above
(13)
Which of the following is not a fungi
[A]
Bread mould
[B]
Penicillium
[C]
Aspergillus
[D]
Paramecium
(14)
Which of the following reproduces only inside a host cell?
[A]
Virus
[B]
Bacteria
[C]
Fungus
[D]
Amoeba
(15)
The two micro-organisms which live in symbiotic association in lichens are
[A]
alga and fungus
[B]
fungus and protozoa
[C]
bacteria and protozoa
[D]
alga and bacteria
(16)
The disease caused by a protozoan and spread by an insect is _________.
[A]
Malaria
[B]
Measles
[C]
Dengue
[D]
Polio
(17)
Paheli dug two pits, A and B, in her garden. In pit A, she put a polythene bag packed with some agricultural waste. In pit B, she dumped the same kind of waste but without packing it in a polythene bag. She, then covered both the pits with soil. What did she observe after a month?
[A]
Waste in pit B degraded faster than that in pit A
[B]
Waste in pit A degraded faster than that in pit B
[C]
Waste in both pits degraded almost equally
[D]
Waste in both pits did not degrade at all
Answer: Waste in pit B degraded faster than that in pit A
(18)
Name the single celled microorganism which found in glacier to deserts and hot spring.
[A]
Bacteria
[B]
Virus
[C]
Algae
[D]
None
(19)
Name the multicellular, heterotrophic microorganisms which found in colonies.
[A]
Fungi
[B]
Algae
[C]
Bacteria
[D]
Virus
(20)
Name the unicellular or multicellular autotrophic microorganism.
[A]
Protozoa
[B]
Fungi
[C]
Algae
[D]
None of these
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