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Mineral Nutrition Test - 28

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Mineral Nutrition Test - 28
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Plastocyanin is a protein containing
    Solution
    Plastocyanin is a copper containing mobile electron carrier, that participates in photosynthesis during light reaction. It carries one electron at a time from cyt b6-f complex to PS I.
  • Question 2
    1 / -0
    Heart rot of marigold is caused by the deficiency of
    Solution
    Heart rot of marigold can be cured by application of small dose of sodium tetraborate in the soil.
  • Question 3
    1 / -0
    Which of the following elements is a component of ferredoxin?
    Solution
    Iron is an essential micronutrient that plays an important role in electron transport systems in photosynthesis and respiration and helps in energy generation. It is essential in chlorophyll synthesis. It is a component of flavoproteins active in biological oxidation. It functions in iron porphyrin proteins which include peroxidases and catalases. It is present in ferredoxin, ferredoxin reducing substance and cytochromes. 
    So, the correct answer is 'Fe'
  • Question 4
    1 / -0
    In a citrus plantation, all the plants were found to be suffering from the die-back disease, spraying of fungicides was of no help. This problem was due to the deficiency of
    Solution
    In citrus plants, copper deficiency symptoms include wilting and dieback of the terminal shoots and failure of the plant to grow straight. The stem may become twisted.
  • Question 5
    1 / -0
    Little leaf disease is due to deficiency of
    Solution
    Zinc is an important micronutrient for plants. It's deficiency leads to stunted growth and little leaf disease in crop plants like brinjal etc.
  • Question 6
    1 / -0
    Deficiency of iron causes
    Solution
    Iron is an essential mineral elements required for normal growth of plants. Iron is required for chlorophyll biosynthesis. Hence, in deficiency of iron, yellow or white areas are seen on youngest leaves. Older leaves remain green, because they already have chlorophyll in them. 
    So, the correct answer is 'Interveinal chlorosis first on young leaves'
  • Question 7
    1 / -0
    Which of the following trace element is essential for auxin synthesis in plants _________________.
    Solution
    An important function of zinc is synthesis of auxin or its precursor amino acid tryptophan.
    So the correct option is C.
  • Question 8
    1 / -0
    Which of the following is deficient in the soil of Gujrat, U.P., and Maharashtra in a large area

    Solution
    In these areas the deficiency of Zn is due to presence of black soil in which naturally Zn compounds are lacking .
  • Question 9
    1 / -0
    Fertility of the soil in rice fields can be improved by _____________.
  • Question 10
    1 / -0
    Red pigment (leghemoglobin), having affinity for oxygen, is present in the roots of
    Solution
    The symbiotic relationship between the plant and the bacterium usually results in the formation of a swollen structure in the root system called as a nodule. Leguminous plants show the presence of nodules. The red pigment in legume nodule is called as leghemoglobin. Soybean belongs to the leguminosae family.
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