Soil And Aquatic Microbiology(Microbiology ) Questions and Answers

Question 1. Which of the following techniques can be used to separate different-size fractions of the aquatic microbial community?
  1.    submerged-slide technique
  2.    fluorescent antibody technique
  3.    membrane-filter technique
  4.    by measuring biochemical activity
Explanation:-
Answer: Option C. -> membrane-filter technique
Answer: (c).membrane-filter technique
Question 2. Which of the following zones have considerable rooted vegetation?
  1.    littoral zone
  2.    limnetic zone
  3.    profundal zone
  4.    benthic zone
Explanation:-
Answer: Option A. -> littoral zone
Answer: (a).littoral zone
Question 3. Rapidly expanding urbanization makes it difficult to generalize upon typical microbial flora of streams.
  1.    True
  2.    False
  3.    May be
  4.    Can't say
Explanation:-
Answer: Option A. -> True
Answer: (a).True
Question 4. Which of the following layer is composed of soft mud or ooze?
  1.    Photic zone
  2.    Limnetic zone
  3.    Benthic zone
  4.    Profundal zone
Explanation:-
Answer: Option C. -> Benthic zone
Answer: (c).Benthic zone
Question 5. In which of the following seasons does the nutrient concentration falls at a drastically lower level?
  1.    Winter
  2.    Spring
  3.    Summer
  4.    Autumn
Explanation:-
Answer: Option C. -> Summer
Answer: (c).Summer
Question 6. The coastal adjunct of the marine ecosystem is __________________
  1.    stream
  2.    estuary
  3.    river
  4.    lake
Explanation:-
Answer: Option B. -> estuary
Answer: (b).estuary
Question 7. The Chesapeake Bay, one of the world’s major estuarine system serves as the receiving basin for how many rivers?
  1.    4
  2.    6
  3.    3
  4.    9
Explanation:-
Answer: Option D. -> 9
Answer: (d).9
Question 8. The characteristic color of the Red Sea is associated with heavy blooms of __________________
  1.    diatoms
  2.    cyanobacteria
  3.    dinoflagellates
  4.    chlamydomonads
Explanation:-
Answer: Option B. -> cyanobacteria
Answer: (b).cyanobacteria
Question 9. In regions of the estuary that are nutritionally poor, it is more likely to find which of the following organisms?
  1.    coliforms
  2.    appendaged bacteria
  3.    viruses
  4.    fecal streptococci
Explanation:-
Answer: Option B. -> appendaged bacteria
Answer: (b).appendaged bacteria
Question 10. Aquatic bacteria tend to be Gram-negative.
  1.    True
  2.    False
  3.    May be
  4.    Can't say
Explanation:-
Answer: Option A. -> True
Answer: (a).True
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