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Mineral Nutrition Test - 22

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Mineral Nutrition Test - 22
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  • Question 1
    1 / -0
    Hydroponics is the
    Solution

    Solution:

    Correct answer is option D.
    Explanation for correct option:

    • Hydroponics is a method of growing plants indoors without using any soil.
    • The word "hydroponics" means growing plants in water.
    • Thus this technique uses no soil but instead grows plants in a solution of water and nutrients. 

  • Question 2
    1 / -0
    Which of the following element is used up in phosphorylation?
    Solution
    • Magnesium is an essential participant which plays a vital role in the reactions that generate and use ATP and phosphate will be required for the phosphorylation reactions.
    • ATP (adenosine triphosphate) must bind to a magnesium ion in order to be biologically active.

    So, the correct answer is option D.
  • Question 3
    1 / -0
    Which element forms part of structure of chlorophyll molecule?
    Solution
    Chlorophylls in general have a cyclic tetrapyrrole structure with four pyrrole rings coordinated to a central magnesium atom.
  • Question 4
    1 / -0
    The two metallic compounds (minerals) required by the plant for chlorophyll synthesis are
  • Question 5
    1 / -0
    Chlorosis occurs when plants are grown in
    Solution
    Chlorosis is the loss of chlorophyll leading to yellowing in leaves. As iron and magnesium are an important requirement for chlorophyll biosynthesis, plants grown in absence of any or both of these elements will show chlorosis.
  • Question 6
    1 / -0
    Necrosis or death of tissue, particularly leaf tissue, is due to the deficiency of
    Solution
    • Necrosis is a common deficiency symptom. It refers to the death of tissue, particularly leaf tissue. The leaf of the plant turns brown to black in color.
    • Necrosis is caused due to the deficiency of essential mineral elements, like Ca, Mg, Cu and K. 

    So, the correct answer is option D.
  • Question 7
    1 / -0
    In plants a common symptom caused by deficiency of P, K, Ca and Mg is the
    Solution
    In plants the deficiency of any element can cause multiple symptoms and also same symptoms may be caused by the deficiency of one of several different elements. Necrosis for example may be a result of deficiency of several elements like K, Ca, Mg and P.
  • Question 8
    1 / -0
    Which element is required for the germination of pollen grain?
    Solution
    • Boron is a micronutrient that is required for pollen germination, root modulation, cell elongation, and carbohydrate translocation.
    • Calcium is required for the organization of the mitotic spindle, metabolism, meristematic activity, secondary message for some hormonal signals, etc.
    • Chlorine is required for cell division, production of fruits, etc.
    • Potassium maintains the cell turgidity, cation-anion balance, respiration, protein synthesis, opening and closing of stomata, etc.
    So, the correct answer is option A.
  • Question 9
    1 / -0
    Sinigrin pungent principle of mustard is due to
    Solution
    Sinigrin is a sulphur containing glycoside found in a number of members of family Brassicaceae or Cruciferae including mustard.
    So, the correct answer is 'Glycoside containing sulphur'
  • Question 10
    1 / -0
    The charcoal culture experiment is better than water culture experiment because
    Solution
    Water culture or hydroponics is a technique of growing plants in a well aerated nutrient solution. Low aeration of medium and lack of physical support to plants are common problems in hydroponics. If charcoal is used in hydroponics then these problems could be rectified because charcoal is inert material hence, it will not affect the nutrient concentration of the culture medium. Also it will provide physical support to plants and charcoal holds air, which will improve aeration in culture.
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