- The yeast multiply by a process called
(a) Binary fission
(b) Budding
(c) Spore formation
(d) None of the above
- The example of protozoan is
(a) Penicillium
(b) Blue green algae
(c) Amoeba
(d) Bacillus
- The most common carrier of communicable diseases is
(a) Ant
(b) Housefly
(c) Dragonfly
(d) Spider
- The following is an antibiotics
(a) Alcohol
(b) Yeast
(c) Sodium bicarbonate
(d) Streptomycin
- Yeast produces alcohol and carbon dioxide by a process called
(a) Evaporation
(b) Respiration
(c) Fermentation
(d) Digestion
- The algae commonly used as fertilizers are called
(a) Staphylococcus
(b) Diatoms
(c) Blue green algae
- Cholera is caused by
(a) Bacteria
(b) Virus
(c) Protozoa
(d) Fungi
- Plant disease citrus canker is caused by
(a) Virus
(b) Fungi
(c) Bacteria
(d) None of these
- The bread dough rises because of
(a) Kneading
(b) Heat
(c) Grinding
(d) Growth of yeast cells
- Carrier of dengue virus is
(a) House fly
(b) Dragon fly
(c) Female Aedes Mosquito
(d) Butterfly
- Yeast is used in the production of
(a) Sugar
(b) Alcohol
(c) Hydrochloric acid
(d) Oxygen
- The vaccine for smallpox was discovered by
(a) Robert Koch
(b) Alexander Fleming
(c) Sir Ronald Ross
(d) Edward Jenner
- Chickenpox is caused by
(a) Virus
(b) Fungi
(c) Protozoa
(d) Bacteria
- The bacterium which promote the formation of curd
(a) Rhizobium
(b) Spirogyra
(c) Breadmould
(d) Lactobacillus
- Plasmodium is a human parasite which causes
(a) dysentery
(b) Sleeping sickness
(c) Malaria
(d) All of the above
- The bacterium Bacillus Anthracis was discovered by
(a) Edward Jenner
(b) Alexander Fleming
(c) Louis Pasteur
(d) Robert Koch
- Carrier of malaria causing protozoan is
(a) Butterfly
(b) Housefly
(c) Female Anopheles Mosquito
(d) Cockroach
- The process of conversion of sugar into alcohol is called
(a) Infection
(b) Moulding
(c) Nitrogen fixation
(d) Fermentation
- Foot and mouth disease of cattle is caused by
(a) Fungi
(b) Virus
(c) Algae
(d) None of these
- Which of the following is not a fungi
(a) Paramecium
(b) Bread mould
(c) Penicillium
(d) Aspergillus
1) b 2) c 3) b 4) d 5) c 6) c 7) a 8) c 9) d 10) c 11) b
12) d 13) a 14) d 15) c 16) d 17) c 18) d 19) b 20) a
VIII Microorganisms-Friend and Foe Solved Questions Read Download
CBSE 8th science: "Notes ands Questions Answers" Read Download
(c) Penicillium
(d) Aspergillus
1) b 2) c 3) b 4) d 5) c 6) c 7) a 8) c 9) d 10) c 11) b
12) d 13) a 14) d 15) c 16) d 17) c 18) d 19) b 20) a
VIII Microorganisms-Friend and Foe Solved Questions Read Download
CBSE 8th science: "Notes ands Questions Answers" Read Download
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