Bacteria MCQs with Answers

Bacteria help to break dead ?

• A.Metals
• B.Rocks
• C.Organic matter
• D.Plastics

The example of atrichious bacteria is?

• A.Spirilla
• B.Cocci
• C.Bacilli
• D.Vibrio

Which of the following is a bacterium involved in denitrification?

• A.Rhizobium
• B.Nitrosomonas
• C.Azotobacter
• D.Pseudomonas

Which of the following bacteria reduce hydrogen sulfide into sulfur in anaerobic conditions?

• A.Thiobacillus
• B.Beggiatoa
• C.Pseudomonas
• D.Escherichia coli

Maintenance of soil fertility without addition of extra nutrition is due to:

• A.Chemical weathering
• B.Photosynthesis
• C.Microbial activity
• D.Nitrogen fixation by lightning

Which of the following is not a characteristic of dinoflagellates?

• A.They possess two flagella
• B.Many species are bioluminescent
• C.Their cells are often covered with shells of interlocking cellulose plates impregnated with calcium
• D.They are mostly marine planktonic organisms

Asexual lifecycle of plasmodium is called _?

• A.Binary fission
• B.Sporogony
• C.Gametogony
• D.Schizogony

The life-cycle of plasmodium in anopheles was demonstrated by ?

• A.Ronald Ross
• B.Laveran
• C.Grassi
• D.Patrick Manson

The Cocci bacteria are _?

• A.Spherical or oval shaped
• B.Rod shaped
• C.Spiral shaped
• D.Comma shaped

Past Paper MCQ

Which of the following are locomotor structures used by bacteria?

• A.Cilia
• B.Flagella
• C.Pseudopodia
• D.Setae