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Mineral Nutrition Test - 61

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Mineral Nutrition Test - 61
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Molybdenum deficiency in plants is rare because it is?
  • Question 2
    1 / -0
    Which one of the following is the essential nutrient element required in the photosynthetic oxidation of water?
  • Question 3
    1 / -0
    Bordeaux mixture consists of _______________.
  • Question 4
    1 / -0
    A nitrogen fixing prokaryote showing symbiotic Asuncion with Azolla belongs to the genus ______________.
  • Question 5
    1 / -0
    Which one of the bacteria is not connected with nitrogen fixation?
  • Question 6
    1 / -0
    Match List I with List II and select the correct answer.
    List IList II
    a. Nitrogen fixation$$1$$. Conversion of NH$$+4$$ into nitrite and nitrate
    b. Denitrification$$2$$. Conversion of nitrite or nitrate into atmosphere nitrogen
    c. Nitrification$$3$$. Conversion of atmospheric nitrogen into ammonia
    d. Ammonification$$4$$. Conversion of organic nitrogen into ammonia
  • Question 7
    1 / -0
    Which one of the following bacteria reduces nitrate to gaseous nitrogen?
    Solution
    The reduction of nitrate back to the environment as nitrogen, i.e., denitrification. This process done by Pseudomonas, Clostridium bacteria in their life cycle.
    So. the correct answer is option D.
  • Question 8
    1 / -0
    Nitrogen fixation occurs in ________________.
    Solution
    • Nitrogen fixation is seen in some free-living bacteria and leguminous plants that have root nodules where the bacteria are in symbiotic association with the plant roots. 
    • Cyanobacteria also have heterocysts that fix atmospheric nitrogen.

    So the correct answer is " Some bacteria, cyan bacteria and legumes".
  • Question 9
    1 / -0
    Which one of the following pairs is not matched?
  • Question 10
    1 / -0
    Apoptosis is programmed cell death characterised by the formation of apoptotic bodies whereas necrosis characterised by bursting of cells. Which of the following condition/s lead/s to necrosis ?
    i) Gaps and nicks formed in DNA during replication cannot be repaired.
    (ii) Developing neurons fail to make synapses with neighbouring cells.
    (iii) Heart muscle cells damaged by oxygen depletion followed by cardiac infarction. 
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