Organizer : Eco Club of Christopher Arts and Science College (Women), Soorangudi, Nanguneri, Tamilnadu

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1. Which of the structural feature is NOT true for actinomycetes?
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5 points
Hyphae are differentiated in aerial and substratum
They have filamentous cells
Their Gram reaction is Gram Negative
They produce exospores
▶️ Their Gram reaction is Gram Negative

2. Which of the following is a common example of fossilized bacteria?
*
5 points
Thiobacillus
Gloeodiniopsis
Methanococcus
E. coli
▶️Gloeodiniopsis

3. Which odor-causing compound of actinomycete origin gives soils their characteristic earthy odor?
*
5 points
Vanillin
Geosmin
Bacteriocin
Cadaverine
▶️ Geosmin

4. Which of the following is an example of an ancient biflagellated Protist?
*
5 points
Giardia lamblia
Chlamydomonas
Cyanophora paradoxa
Aspergillus niger
▶️ Cyanophora paradoxa

5. Which of the following is an example of symbiotic nitrogen-fixing actinomycete?
*
5 points
Actinoplane
Frankia
Actinococci
Rhizobium
▶️Frankia

6. Which phototrophic bacteria trap light energy without using any chlorophyll-like compound?
*
0/5
Thermoplasma volcanium
Halobacterium salinarium
Prosthecochloris vibrioformis
Anabena
▶️ Halobacterium salinarium

7. Which of the following is most significant ecological role played by actinomycetes?
*
5 points
Primary production of organic matter by photosynthesis
Denitrification of Nitrate compounds
Nitrification of ammonium compounds
Degradation and mineralization of organic matter
▶️ Degradation and mineralization of organic matter

8. How extreme thermophile Archaeoglobus differs from other Archaea?
*
5 points
It cannot survive at more than 80 °C temperature
It possess Pseudopeptidoglycan in cell wall
It is a Sulfate Reducing Bacteria
It is extreme halophile
▶️ It is a Sulfate Reducing Bacteria

9. Which of the following antibiotic is NOT produced by the members of Geneus Streptomyces?
*
5 points
Amphotericin B
Erythromycin
Gramicidin
Tetracycline
▶️ Gramicidin

10. Which bacteria perform a very rare type of motility called Social Motility?
*
5 points
Chlorobium limicola
Xanthomonas citrii
Myxococcus xanthus
Pseudomonas aeruginosa
▶️ Myxococcus xanthus

11. Which of the following is an example of HARMFUL role played by algae?
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5 points
Red tides
Formation of cell wall frustules
Oxygenic photosynthesis
Formation of lichens
▶️ Red tides

12. Alternate morphological changes in fungi is known as…
*
5 points
Biform variation
Structural Variation
Metamorphosis
YM Shift
▶️ YM Shift

13. Which of the following is NOT true for diatoms?
*
5 points
They are important for the biochemical cycling of silica
They are important source of food for marine animals
They produce kieselguhr
They can fix molecular nitrogen
▶️ They can fix molecular nitrogen

14. Which of the following fungus is known for their ability to perform degradation of lignin in nature?
*
5 points
Common powdery mildew
Common bread mold
White-rot fungi
Sac fungi
▶️White-rot fungi

15. Which of the following is an example of non-pathogenic Protist?
*
5 points
Trichomonas vaginalis
Entamoeba histolytica
Trypanosoma cruzi
Euglena gracilis
▶️ Euglena gracilis

16. Which fungal spores are developed within a sac?
*
5 points
Chlamydospore
Arthrospores
Sporangiospores
Conidiospores
▶️ Sporangiospores

17. Which of the following viruses are large enough in size to be seen in light microscope?
*
5 points
Poxviruses
Lambda phage
Coronaviruses
T4 Phage
▶️Poxviruses

18. Which group of fungi is used in the preparation of fermented foods like tempeh and sufu?
*
5 points
Ascomycetes
Chalmydomycetes
Zygomycetes
Basidiomycetes
▶️ Zygomycetes

19. Which of the following virus is NOT causing a novel emerging viral disease?
*
5 points
Hantavirus
Rabies virus
Ebola virus
H5N1 avian influenza virus
▶️ Rabies virus

20. Name the fungi which is having a protozoan ancestor with similar flagellation.
*
5 points
Chytridiomycota
Basidiomycota
Chalmydomycota
Ascomycota
▶️ Chytridiomycota