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MCQs

Total Questions : 186 | Page 8 of 19 pages
Question 71. Microbial inhabitants of the bottom region of a body of water are referred to as ________________
  1.    phytoplankton
  2.    benthic organisms
  3.    zooplankton
  4.    mycoplankton
 Discuss Question
Answer: Option B. -> benthic organisms
Answer: (b).benthic organisms
Question 72. The microorganisms from lakes and rivers can grow at a salt concentration of _________
  1.    2.5 to 4 percent
  2.    5 percent
  3.    below 1 percent
  4.    above 1 percent
 Discuss Question
Answer: Option C. -> below 1 percent
Answer: (c).below 1 percent
Question 73. Protozoa and other minute animal life are known as ____________________
  1.    plankton
  2.    phytoplankton
  3.    zooplankton
  4.    mycoplankton
 Discuss Question
Answer: Option C. -> zooplankton
Answer: (c).zooplankton
Question 74. The degradation of complex molecules in soil by fungi for utilization by bacteria is an example of which type of association?
  1.    Neutralism
  2.    Mutualism
  3.    Commensalism
  4.    Antagonism
 Discuss Question
Answer: Option C. -> Commensalism
Answer: (c).Commensalism
Question 75. Which of the following types of association is present among Staphylococcus aureus and Aspergillus terreous?
  1.    antagonism
  2.    mutualism
  3.    parasitism
  4.    commensalism
 Discuss Question
Answer: Option A. -> antagonism
Answer: (a).antagonism
Question 76. The association which involves the exchange of nutrients between two species is referred to as ______________
  1.    mutualism
  2.    syntrophism
  3.    commensalism
  4.    antagonism
 Discuss Question
Answer: Option B. -> syntrophism
Answer: (b).syntrophism
Question 77. Lytic enzymes which destroy are secreted by which of the following microorganism?
  1.    fungi
  2.    algae
  3.    staphylococcus
  4.    myxobacteria
 Discuss Question
Answer: Option D. -> myxobacteria
Answer: (d).myxobacteria
Question 78. Fungi produces which of the following inhibitory toxic product?
  1.    cyanide
  2.    fatty acids
  3.    methane
  4.    sulphides
 Discuss Question
Answer: Option A. -> cyanide
Answer: (a).cyanide
Question 79. Phytoplanktonic organisms are non-motile.
  1.    True
  2.    False
  3.    May be
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 80. Which of the following places shows presence of Geothermal vents?
  1.    Coasts of California
  2.    Coasts of Peru
  3.    Galapagos islands
  4.    Pacific ocean
 Discuss Question
Answer: Option C. -> Galapagos islands
Answer: (c).Galapagos islands

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