Microbial Diversity Quiz

 

1. Which of the structural feature is NOT true for actinomycetes? 

They have filamentous cells

They produce exospores

Their Gram reaction is Gram Negative

Hyphae are differentiated in aerial and substratum

Answer: Their Gram reaction is Gram Negative

 

2. Which of the following is a common example of fossilized bacteria? 

E. coli

Methanococcus

Gloeodiniopsis

Thiobacillus

Answer: Gloeodiniopsis

 

3. Which odor-causing compound of actinomycete origin gives soils their characteristic earthy odor? 

Bacteriocin

Geosmin

Cadaverine

Vanillin

Answer: Geosmin

 

4. Which of the following is an example of an ancient biflagellated Protist? 

Chlamydomonas

Cyanophora paradoxa

Aspergillus niger

Giardia lamblia

Answer: Cyanophora paradoxa

 

5. Which of the following is an example of symbiotic nitrogen-fixing actinomycete? 

Rhizobium

Actinoplane

Actinococci

Frankia

Answer: Frankia

 

6. Which phototrophic bacteria trap light energy without using any chlorophyll-like compound? 

Thermoplasma volcanium

Anabena

Halobacterium salinarium

Prosthecochloris vibrioformis

Answer: Halobacterium salinarium

 

7. Which of the following is most significant ecological role played by actinomycetes? 

Denitrification of Nitrate compounds

Primary production of organic matter by photosynthesis

Nitrification of ammonium compounds

Degradation and mineralization of organic matter

Answer: Degradation and mineralization of organic matter

 

8. How extreme thermophile Archaeoglobus differs from other Archaea? 

It possess Pseudopeptidoglycan in cell wall

It is extreme halophile

It cannot survive at more than 80 °C temperature

It is a Sulfate Reducing Bacteria

Answer: It is a Sulfate Reducing Bacteria

 

9. Which of the following antibiotic is NOT produced by the members of Geneus Streptomyces? 

Tetracycline

Gramicidin

Amphotericin B

Erythromycin

Answer: Gramicidin

 

10. Which bacteria perform a very rare type of motility called Social Motility? 

Pseudomonas aeruginosa

Xanthomonas citrii

Chlorobium limicola

Myxococcus xanthus

Answer: Myxococcus xanthus

 

11. Which of the following is an example of HARMFUL role played by algae? 

Oxygenic photosynthesis

Formation of lichens

Red tides

Formation of cell wall frustules

Answer: Red tides

 

12. Alternate morphological changes in fungi is known as… 

Biform variation

YM Shift

Metamorphosis

Structural Variation

Answer: YM Shift

 

13. Which of the following is NOT true for diatoms? 

They produce kieselguhr

They are important source of food for marine animals

They are important for the biochemical cycling of silica

They can fix molecular nitrogen

Answer: They can fix molecular nitrogen

 

14. Which of the following fungus is known for their ability to perform degradation of lignin in nature? 

Sac fungi

Common powdery mildew

White-rot fungi

Common bread mold

Answer: White-rot fungi

 

15. Which of the following is an example of non-pathogenic Protist? 

Entamoeba histolytica

Euglena gracilis

Trichomonas vaginalis

Trypanosoma cruzi

 Answer : Euglena gracilis

 

16. Which fungal spores are developed within a sac? 

Chlamydospore

Conidiospores

Sporangiospores

Arthrospores

Answer: Sporangiospores

 

17. Which of the following viruses are large enough in size to be seen in light microscope? 

Poxviruses

Lambda phage

Coronaviruses

T4 Phage

Answer: Poxviruses

 

18. Which group of fungi is used in the preparation of fermented foods like tempeh and sufu? 

Ascomycetes

Zygomycetes

Basidiomycetes

Chalmydomycetes

Answer: Zygomycetes

 

19. Which of the following virus is NOT causing a novel emerging viral disease? 

H5N1 avian influenza virus

Rabies virus

Hantavirus

Ebola virus

Answer: Rabies virus

 

20. Name the fungi which is having a protozoan ancestor with similar flagellation. 

Chytridiomycota

Chalmydomycota

Basidiomycota

Ascomycota

Answer: Chytridiomycota