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question_answer1)
Which of the following is the smallest microorganism?
A)
Algae done
clear
B)
Bacterium done
clear
C)
Protozoan done
clear
D)
Virus done
clear
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question_answer2)
Identify W, X and Y?
A)
B)
C)
D)
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question_answer3)
Identify bacteriophage.
A)
Algae done
clear
B)
Virus done
clear
C)
Protozoa done
clear
D)
Fungi done
clear
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question_answer4)
Which of the following statements describes bacteriophage correctly?
A)
It is a bacterium which causes diseases in plants. done
clear
B)
It is a type of virus which attacks bacteria. done
clear
C)
It is a bacterium which kills viruses. done
clear
D)
It can multiply inside both living and non-living cells. done
clear
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question_answer5)
Fungi reproduces by
A)
Fission done
clear
B)
Fusion done
clear
C)
Seed formation done
clear
D)
Spore formation done
clear
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question_answer6)
Which of the following characteristics places algae in the group of autotroph?
A)
Carrying out anaerobic respiration done
clear
B)
Manufacturing their own food done
clear
C)
Feeding on dead organisms done
clear
D)
Feeding on other living organisms done
clear
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question_answer7)
The moist bread becomes mouldy after a few days when it is left in a container with a cover. Which of the following conditions favour the growth of the fungus?
A)
Absence of light done
clear
B)
Absence of water done
clear
C)
Presence of sunlight done
clear
D)
Presence of carbon dioxide done
clear
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question_answer8)
Which of the following microorganisms play an important role in maintaining the balance of nitrogen gas in the atmosphere?
A)
Viruses done
clear
B)
Bacteria done
clear
C)
Algae done
clear
D)
Protozoa done
clear
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question_answer9)
What causes the dough to rise when yeast is added to it?
A)
An increase in temperature done
clear
B)
An increase in the amount of substance done
clear
C)
An increase in the amount of released water by yeast cells done
clear
D)
The release of carbon dioxide gas done
clear
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question_answer10)
What process takes place when yeast is added to grape juice and left for a week?
A)
Decomposition done
clear
B)
Fermentation done
clear
C)
Distillation done
clear
D)
Oxidation done
clear
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question_answer11)
Which of the following enzymes is secreted by bacteria that can digest cellulose?
A)
Amylase done
clear
B)
Cellulase done
clear
C)
Lipase done
clear
D)
Protease done
clear
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question_answer12)
Which of the following is/are the functions performed by the microorganisms in the field of biotechnology?
A)
The production of bioplastic done
clear
B)
The production of hormones done
clear
C)
Gene therapy done
clear
D)
Both (B) and (C) done
clear
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question_answer13)
Which of the following is/are produced by using bacteria?
A)
Antibiotics done
clear
B)
Cheese done
clear
C)
Yoghurt done
clear
D)
All of these done
clear
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question_answer14)
Which of the following terms is given to the microorganisms that cause diseases?
A)
Antigens done
clear
B)
Antibodies done
clear
C)
Pathogens done
clear
D)
Vectors done
clear
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question_answer15)
Which of the following disease causing pathogens is / are carried by mosquitoes?
A)
Dengue fever done
clear
B)
Malaria done
clear
C)
Cholera done
clear
D)
Both (A) and (B) done
clear
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question_answer16)
Identify the disease that is caused by protozoa.
A)
Cholera done
clear
B)
Malaria done
clear
C)
Jaundice done
clear
D)
Hepatitis B done
clear
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question_answer17)
Which of the following options is/are true about the diseases, microorganisms which cause them and the symptoms of the diseases?
A)
Malaria, Protozoan, Fever and Chills done
clear
B)
Hepatitis B, Virus, Swollen liver done
clear
C)
Cholera, Virus, Vomiting, diarrhea done
clear
D)
Both (A) and (B) done
clear
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question_answer18)
Which of the following can affectively prevent the ringworm disease?
A)
Vaccination done
clear
B)
Vector control done
clear
C)
Improving personal hygiene done
clear
D)
Using antibiotics done
clear
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question_answer19)
Which of the following bacteria lives symbiotically in pea plants?
A)
Rhizobium done
clear
B)
Nitrosomonas done
clear
C)
Azotobacter done
clear
D)
Clostridium done
clear
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question_answer20)
Which of the following bacteria causes Cholera?
A)
Streptococcus done
clear
B)
Clostridium done
clear
C)
Pasteurella done
clear
D)
Vibrio done
clear
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question_answer21)
Which of the following food components is digested by bacteria living in the intestines of herbivorous animals?
A)
Cellulose done
clear
B)
Proteins done
clear
C)
Fats done
clear
D)
Vitamins done
clear
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question_answer22)
Which of the following fungi have given one of the greatest drugs to the world of medicine?
A)
Penicillium notatum done
clear
B)
Ustilago maydis done
clear
C)
Colletorichum falcatum done
clear
D)
Alternaria solani done
clear
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question_answer23)
Which one of the following is called pond silk?
A)
Spirogyra done
clear
B)
Volvox done
clear
C)
Chlamydomonas done
clear
D)
Euglena done
clear
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question_answer24)
Which of the following is the characteristic feature that distinguishes an algae from fungi?
A)
Heterotrophic done
clear
B)
Autotrophic done
clear
C)
Parasitic done
clear
D)
Sporophytic done
clear
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question_answer25)
How does Entamoeba histolytica enter the human body?
A)
Through a mosquito bite done
clear
B)
Through Bird droppings done
clear
C)
Through Contaminated food and water done
clear
D)
Through a Sweat done
clear
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question_answer26)
Which of the following microorganisms causes common cold?
A)
Bacteria done
clear
B)
Virus done
clear
C)
Protozoa done
clear
D)
Algae done
clear
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question_answer27)
Which of the following statements is true for viruses?
A)
Viruses multiply only in living host. done
clear
B)
Their crystals have a definite shape. done
clear
C)
Viruses grow and multiply by themselves outside the host. done
clear
D)
Viruses may be crystallized. done
clear
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question_answer28)
How are microorganisms useful to us?
A)
The production of chemical fertilizers done
clear
B)
The production of fireworks done
clear
C)
The production of soft drinks done
clear
D)
The production of antibiotics done
clear
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question_answer29)
A microorganism X is used in the making of bread. It is also used in making which of the following substances?
A)
Cheese done
clear
B)
Vinegar done
clear
C)
Wine done
clear
D)
Yoghurt done
clear
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question_answer30)
Through which of the following modes do most of the infectious diseases spread?
A)
Body contact done
clear
B)
Air done
clear
C)
A vector done
clear
D)
All of these done
clear
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question_answer31)
Which of the following is represented by 'X' in the figure given below?
A)
Protozoa done
clear
B)
Bacteria done
clear
C)
Viruses done
clear
D)
Algae done
clear
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question_answer32)
Which of the following is the largest bacteria?
A)
Bacillus done
clear
B)
Coccus done
clear
C)
Spirillum done
clear
D)
Spherical done
clear
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question_answer33)
Which of the following substances is/are produced by an organism to prevent or reduce the spread of microorganisms?
A)
Antiseptics done
clear
B)
Antibiotics done
clear
C)
Antibodies done
clear
D)
All of these done
clear
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question_answer34)
Which of the following organisms have an ability to help in recycling of nutrients and energy?
A)
Bacteria done
clear
B)
Diatoms done
clear
C)
Virus done
clear
D)
Fungi done
clear
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question_answer35)
What helps in diffentiating 'Spirogyra' from 'paramoecium'?
A)
Mitochondria done
clear
B)
Golgi bodies done
clear
C)
Nucleus done
clear
D)
Plastids done
clear
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question_answer36)
Which of the following organisms can perform photosynthesis?
A)
Euglena done
clear
B)
Paramecium done
clear
C)
Mucor done
clear
D)
Mushroom done
clear
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question_answer37)
Which of the following microorganisms are used in making antibiotics?
A)
Viruses done
clear
B)
Fungi done
clear
C)
Bacteria done
clear
D)
Both and done
clear
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question_answer38)
Observe the given figure and identify P, Q, R and S.
A)
P-Coccus, Q-Bacillus, R-Vibrio, S-Spirillum done
clear
B)
P-Bacillus, Q-Coccus, R-Spirillum, S-Vibrio done
clear
C)
P-Bacillus, Q-Vibrio, R-Coccus, S-Spirillum done
clear
D)
P-Bacillus, Q-Spirillum, R-Vibrio, S-Coccus done
clear
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question_answer39)
Which of the following pair is correct?
A)
B)
C)
D)
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question_answer40)
Which of the following microorganisms exhibit symbiotic life?
A)
Lichens done
clear
B)
Volvox done
clear
C)
Blue green algae done
clear
D)
Spirogyra done
clear
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