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Mineral Nutrition Test - 52

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Mineral Nutrition Test - 52
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  • Question 1
    1 / -0
    Plastocyanin contains
    Solution
    Plastocyanin, a small protein containing a single Cu atom, occurs in all higher plants, green algae and some blue-green algae. It has an essential role in photosynthesis, functioning as the last electron carrier in a chain between photosystems II and I.
    Thus, the correct answer is option (C).
  • Question 2
    1 / -0
    Which is not a microelement?
    Solution
    Macroelements are nutrients that are required in larger amounts by plants and other living organisms. Carbon(C), hydrogen (H), nitrogen (N), oxygen (O), phosphorous (P), potassium (K), calcium (Ca), sulfur (S), and magnesium (Mg) are macroelements.
    Microelements are nutrients that are required in smaller amounts. Boron (B), chlorine (Cl), manganese (Mn), iron (Fe), zinc (Zn), copper (Cu), molybdenum (Mo), nickel (Ni). and cobalt (Co) are microelements.
    Thus, the correct answer is option (D).
  • Question 3
    1 / -0
    Zinc is essential for
    Solution
    Zn is the micronutrient that required for the synthesis of IAA ie. Indole 3 Acetic Acid.
    Hence, C is the right answer.
  • Question 4
    1 / -0
    Which of the following is a micronutrient?
    Solution
    The essential elements which are required by the plants in comparatively large amounts are called as major elements or macronutrients. They are C, H, O, N, P, K, Ca, S, Mg. Micronutrients which are required in relatively fewer amounts are Fe, Mn, Zn, B, Cu, Ni, CI, and Mo. These are the cofactors of enzymes and helps in the enzymatic activity of the plant.
    Thus, the correct answer is option C.
  • Question 5
    1 / -0
    Element essential for photolysis of water is
    Solution
    Correct Answer: (C) Chlorine.
    Explanation:
    • Chlorine is an essential micronutrient that plays an important role in photolysis of water.
    • Chlorine is involved in photolysis or photoxidation of water. The released electrons from the splitting of water goes in the Photosystem II. It helps in the evolution of molecular oxygen 
    Hence, option (C) is the correct answer.
  • Question 6
    1 / -0
    Exanthema is a result of deficiency of
    Solution
    Exanthema disease is a deficiency symptom of copper in the plant, produced by soil factors and brought about by soil microorganisms, as they attack the roots and produce harmful substances. It causes the yield of gums on the bark and affects fruit bearing capacity of the tree. Dying of the leaves is a major characteristic symptom of exanthema.
    Thus, the correct answer is option (A). 
  • Question 7
    1 / -0
    Gene responsible for nitrogen fixation is
    Solution
    Nif genes are the genes present in nitrogen -fixing bacteria encoding for the enzymes involved in nitrogen fixation i.e., nitrogenase, nitrate reductase, nitrite reductase.
    All the other options given are the names of enzymes not gene.
    Hence, A is the right answer.
  • Question 8
    1 / -0
    Mineral present in cytochrome is
    Solution
    Fe constitutes the cytochrome. It is present in the centre of cytochrome structure. Cytochrome is the protein that takes part in Electron Transport Chain. Thus the correct answer is option A.
  • Question 9
    1 / -0
    Salt respiration is?
  • Question 10
    1 / -0
    Grey spots of oats are caused by the deficiency of
    Solution
    Manganese is a micronutrient absorbed by the plant in the form of manganous ions. It activates enzymes of respiration, photosynthesis and nitrogen metabolism. It's a deficiency cause of interveinal chlorosis and grey spot or stripes, legume cotyledons with brownish spots.
    So the correct answer is 'Mn'.
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