Objective Questions of Nitrogen Metabolism

Multiple Choice Questions (MCQs)

  1. Which of the followings is an anaerobic bacterium?

(a) Azotobacter (b) Nitrobactor      (c) Clostridium (d) None

  1. Which of the followings is non-aerobic bacterium?

(a) Azotobacter (b) Nitrobactor      (c) Clostridium (d) None

  1. Which of the followings fixed nitrogen in waterlogged soil?

(a) Nostoc    (b) Nitrobactor         (c) Clostridium (d) None

  1. Which of the followings is a group of biological nitrogen
    fixing group of fungi?

(a) Nostacles (b) Actinomycetes    (c) Casurina   (d) None

  1. The nodule forming bacteria are:

(a) Azotobacter (b) Nitrobactor      (c) Clostridium (d) Rhizobium

biological nitrogen fixation are:

(a) 10              (b) 30                           (c) 50                (d) All
Answers

1. (c) 2. (a) 3. (a) 4. (b) 5. (c) 6. (b) 7. (a) 8. (c) 9. (a)

Fill in blanks


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  1. The free living nitrogen fixing organisms are called are____
    organisms.
  2. Several species of___ develop mycorrhizal association with
    the root of Casurina, Pinus and other plants.
  3. Diamide (z3 NH = NH) and (NH2—N113) and NE13
    NH3 are the intermediate compounds.
  4. Ans

1. asymbiotic 2. Actinomycetes  3. hydrazine

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