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Mineral Nutrition Test - 4

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Mineral Nutrition Test - 4
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Weekly Quiz Competition
  • Question 1
    4 / -1

    An immobile element in plants is

    Solution

    The deficiency symptoms tend to appear first in the young tissues whenever the elements are relatively immobile and are not transported out of the mature organs. Example, calcium.

  • Question 2
    4 / -1

    The requirement of micro nutrient are always low if the concentration increases it leads to

    Solution

    The requirement of micronutrients is always in low amounts while their moderate decrease causes the deficiency symptoms and a moderate increase causes toxicity.

  • Question 3
    4 / -1

    Amino acid derivatives in which –OH component of carboxylic group is replaced by another amino group are called

    Solution

    Amides are obtained from the replacement of –OH component of carboxylic group of amino acid by another amino group

  • Question 4
    4 / -1

    Non-symbiotic nitrogen fixing prokaryote is

    Solution

    Most of the prokaryotic nitrogen fixing prokaryotes are symbiotic in nature. Azatobacter is bacteria is non-symbiotic nitrogen fixing prokaryote.

  • Question 5
    4 / -1

    The enzyme involved in biological nitrogen fixation are

    Solution

    The conversion of atmospheric nitrogen to ammonia by nitrogenase enzyme complex found in nitrogen-fixing bacteria(biological nitrogen fixation).

  • Question 6
    4 / -1

    Magnesium is component of

    Solution

    It is absorbed by plants in the form of divalent Mg2+.Magnesium is a constituent of the ring structure of chlorophyll and helps to maintain the ribosome structure.

  • Question 7
    4 / -1

    The excess of manganese may induce deficiency in

    Solution

    Excess of manganese may, in fact, induce deficiencies of iron, magnesium and calcium. Thus, what appears as symptoms of manganese toxicity may actually be the deficiency symptoms of iron, magnesium and calcium.

  • Question 8
    4 / -1

    Mineral absorption into the plant is always against the concentration gradient and use ATP as source of energy, it is an / a

    Solution

    Mineral absorption into the plant is always against the concentration gradient and use ATP molecules as source of energy is an active process. As concentration of minerals are always higher in cell than soil.

  • Question 9
    4 / -1

    Main role of minor elements is to act as

    Solution

    Micronutrients are required in very small quantity. The main role of micronutrients is to act as cofactor of enzyme. Co-factors increase the efficiency of enzymes.

  • Question 10
    4 / -1

    Choose the odd one out among the following (on the basis of nitrifying and denitrifying bacteria)

    Solution

    Except pseudomonas all other bacteria are free living, nitrogen fixing microbes.

    Psedomonas is an denitrifying bacteria while remaining three are nitrifying bacterias

  • Question 11
    4 / -1

    Which element essential for photolysis of water?

    Solution

    Chlorine is absorbed in the form of chloride anion (Cl–). Along with it Na+ and K+, it helps in determining the solute concentration and the anioncation balance in cells. It is essential for the water-splitting reaction in photosynthesis.

  • Question 12
    4 / -1

    The cupric ions are essential for

    Solution

    Copper is absorbed as cupric ions (Cu2+)which are essential for the overall metabolism in plants.

  • Question 13
    4 / -1

    Which one is prerequisite for nitrogen fixation?

    Solution

    During nitrogen fixation atmospheric nitrogen is converted into nitrates and nitrites. When deficiency of nitrate occurs in soil, nitrogen fixation occurs. So, nitrate deficiency is prerequisite for nitrogen fixation.

  • Question 14
    4 / -1

    Which one of the following mineral elements plays an in biological nitrogen fixation?

    Solution

    Iron, Molybdenum as well as Phosphorous play important role in BNF. Nitrogen fixation needs an enzyme called nitrogenase. The nitrogenase enzyme has two kinds of proteins viz. Iron Protein, and Iron-Molybdenum protein.

  • Question 15
    4 / -1

    Which among the following is NOT the source of nitrogen?

    Solution

    The xylem is the part of plant which conducts water from one location to another. But all the others are sources of nitrogen.

  • Question 16
    4 / -1

    Phosphorous is a constituent of A.Cell membrane B.Nucleic acids C.cellwallD.chlorophyll

    Solution

    Phosphorus is a constituent of cell membranes, certain proteins, all nucleic acids and nucleotides

  • Question 17
    4 / -1

    Element that is necessary for controlling metabolic activities is

    Solution

    Calcium activates certain enzymes and plays an important role in regulating metabolic activities.

  • Question 18
    4 / -1

    Analysis of xylem sap shows

    Solution

    Mineral salts are translocated through xylem along with the ascending stream of water, which is pulled up through the plant by transpirational pull.

  • Question 19
    4 / -1

    Grey spots of Oat are due to deficiency of

    Solution

    Manganese deficiency in Oat appear as grey spots on leaves of oat. Rate of photosynthesis is also influenced by the Manganese elements.

  • Question 20
    4 / -1

    During the development of root nodule in soya bean. The cells lead to formation of root nodules in

    Solution

    Infected thread carries the bacteria tothe inner cortex. The bacteria get modified into rod-shaped bacteroidsand cause inner cortical and pericycle cells to divide. Division and growth of cortical and pericycle cells lead to nodule formation.

  • Question 21
    4 / -1

    Chlorosis is referred as

    Solution

    Chlorosis is the loss of chlorophyll leading to yellowing in leaves. This symptom is caused by the deficiency of elements. N, K, Mg, S, Fe, Mn, Zn and Mo.

  • Question 22
    4 / -1

    The morphological changes are indicative ofcertain element deficiencies and are called

    Solution

    Explanation:The morphological changes are indicative of certain element deficiencies and are called deficiency symptoms.

  • Question 23
    4 / -1

    Function of laghaemoglobin during biological nitrogen fixation in root nodules of legumes is to

    Solution

    During biological nitrogen fixation in root nodules of legumes, laghaemoglobin provide protect the nitrogenase from Oxygen.

  • Question 24
    4 / -1

    Sulphur is important nutrient for optimum growth and productivity of

    Solution

    Sulphur is most important nutrient for optimum growth and productivity of Pulses.

  • Question 25
    4 / -1

    Biological nitrogen fixation was discovered by

    Solution

    Sergei Winogradsky discovered the biological nitrogen fixation during which atmospheric nitrogen is converted into nitrates and nitrite.

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