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Mineral Nutrition Test - 7

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Mineral Nutrition Test - 7
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Weekly Quiz Competition
  • Question 1
    1 / -0

    Which of the following elements has not been proved to be essential for plants?

    Solution

    Sodium is not generally regarded as an essential nutrient for plants. However, sodium can substitute for potassium to a greater or lesser extent in different plant species.

  • Question 2
    1 / -0

    Which of the following is the most important element present in middle lamella?

    Solution

    Calcium is an essential element which occurs in concentration of 1.0 to 10.0 mg per gram of dry matter in plants. Calcium is an important component of the middle lamella.

  • Question 3
    1 / -0

    Pick the odd one out in the following with respect to the non legume plant containing rhizobium in its roots.

    Solution

    In the case of Pisum sativum, which is leguminous plant, Rhizobium leguminosarum is found.

  • Question 4
    1 / -0

    Which of the following is an example of symbiotic nitrogen fixing cyanobacteria which occurs as symbionts and provides extra nitrogen to plants?

    Solution

    It is an example of symbiotic nitrogen fixing cyanobacteria which occurs as symbionts and provides extra nitrogen to plants.

  • Question 5
    1 / -0

    Which of the following microorganisms is known as nitrite microorganism?

    Solution

    Aspergillus is a fungi that helps in the conversion of ammonia to nitrate and is called nitrite microorganism. Nitrosomonas and Nitrosococcus are also called nitrite microorganisms.

  • Question 6
    1 / -0

    Which of the following is not a component of ATP?

    Solution

    Calcium is not a component of ATP.

  • Question 7
    1 / -0

    EDTA is commonly used in tissue culture media. It is

    Solution

    When working with plant tissue culture, we use EDTA as a chelating agent in order to keep magnesium and other elements in suspension, so that the plant tissue can easily absorb them (EDTA is ethylene diamine tetraacetic acid).

  • Question 8
    1 / -0

    In the nitrogen cycle, atmospheric nitrogen is fixed by bacteria and converted into ammonia. Ammonia is further converted into other forms of nitrogen. At the end of the cycle, it returns to the atmosphere by the process of

    Solution

    Denitrification is the process of conversion of nitrates and nitrites into nitrogen. This is done mainly by bacteria pseudomonas and clostridium.

  • Question 9
    1 / -0

    Which of the following play(s) the role of conversion of nitrate salts into free nitrogen gas in nitrogen cycle?

    Solution

    Pseudomonas converts nitrate salts into free nitrogen gas in nitrogen cycle. This process is known as denitrification.

  • Question 10
    1 / -0
    Deficiency of molybdenum causes
    Solution

    Molybdenum is needed in small amounts by plants, but the use of soil less media and fertilizers lacking this element, can cause mottling and necrosis of leaves.

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