InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Which of the following is an micronutrient ?A. MgB. ZnC. CaD. P |
| Answer» Correct Answer - 2 | |
| 52. |
Which one of the following elements is not an essential micronutrient for plant growth?A. MnB. ZnC. CuD. Ca |
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Answer» Correct Answer - D Ca is essential macronutrient for plant growth. It is constituent of middle lamella, activator of enzymes, connected with chromosome formation and many aspects of metabolism. |
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| 53. |
Which of the following is not an essential micronutrient ?A. BoronB. SodiumC. ManganeseD. Molybdenum |
| Answer» Correct Answer - 2 | |
| 54. |
Which one of the following elements is not an essential micronutrient for plant growth?A. CaB. MnC. ZnD. Cu |
| Answer» Correct Answer - A | |
| 55. |
Minerals involved in carbohydrate translocation, maintaining ribosome structure and activation of nitrogenase respectively areA. Mn,B,CaB. Ca,Mg,MoC. B,Mn,MoD. Cu,Mg,B |
| Answer» Correct Answer - C | |
| 56. |
Which is essential for selective permeability of cell membrane.A. ZnB. CaC. MoD. S |
| Answer» Correct Answer - 2 | |
| 57. |
Which of the following elements is responible for maintaining turgor in cellsA. CalciumB. PotassiumC. SodiumD. Magnesium |
| Answer» Correct Answer - 2 | |
| 58. |
Copper is activator in enzymeA. cytochrome oxidaseB. carbonic anhydraseC. lactic dehydrogenaseD. tryptophanase |
| Answer» Correct Answer - 1 | |
| 59. |
Select the option that contains micronutrients onlyA. Mn, Mo, ZnB. C, H, NC. N, P, OD. Mn, K, S |
| Answer» Correct Answer - A | |
| 60. |
How is calcium essential for cell division ? |
| Answer» Calcium is required during the formation of mitotic spindle and organisation of chromosomes. | |
| 61. |
Which element is constituent of biotin?A. CalciumB. PhosphorusC. sulphurD. magnesium |
| Answer» Correct Answer - C | |
| 62. |
Assertion : Iron is a microelement Reason : Microelements are required in traces only, less than 1 mg/gm of dry matterA. Both Assertion and Reason are true and Reason is the correct explanation of assertionB. Both assertion and Reason are true, but reason is not the correct explanation of assertionC. Assertion is true, but reason is falseD. Assertion is false, but reason is true |
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Answer» Correct Answer - A Microelements are essential elements, which are requird by plants in traces only, less than 1 mg/gm of drymatter, e.g., iron, zinc, copper, etc. |
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| 63. |
Match column I with column II and select the correct option from the codes given below `{:(underset("(Activator element)")("Column I"),underset("(Enzyme)")("Column II")),(A" "Mg^(2+) ,,(i)" Nitrate reductase"),(B." "Zn^(2+),(ii)." RuBisCO, PEPCase"),(C." "Mo,(ii)." Alcohol dehydrogenase"):}`A. A-(ii),B-(iii),C-(i)B. A-(iii),B-(ii),C-(i)C. A-(i),B-(iii),C-(ii)D. A-(ii),B-(i),(C)-(iii) |
| Answer» Correct Answer - A | |
| 64. |
Which ion is essential for maintaining the permeability of the cell membrane?A. `Cu^(2+)`B. `Ca^(2+)`C. `Mg^(2+)`D. `Fe^(2+)` |
| Answer» Correct Answer - B | |
| 65. |
Assertion: Calcium is a constituent of cell wall. Reason: Calcium is required in mitotic division.A. Both Assertion and Reason are true and Reason is the correct explanation of assertionB. Both assertion and Reason are true, but reason is not the correct explanation of assertionC. Assertion is true, but reason is falseD. Assertion is false, but reason is true |
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Answer» Correct Answer - B Calcium is a constituent of cell wall in the form of calcium pectate. It is required in small amounts for normal mitosis. Calcium is also involved in chromatin or mitotic spindle organisation. |
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| 66. |
Monovalents (e.g., `Na^(2),K^(+)`)_____membrane permeability while divalents (e.g., `Ca^(2+)`)_____the same.A. increase, decreaseB. decrease, increaseC. increase, increaseD. decrease, decrease |
| Answer» Correct Answer - A | |
| 67. |
Yield of rice is increased byA. AzotobacterB. AnabaenaC. CylindrospermumD. Clostridium |
| Answer» Correct Answer - 2 | |
| 68. |
Read the following matches (i) Zinc - Activator of catalase (ii) Calcium - Required during formation of mitotic spindle (iii) Sulphur - Constituent of ferredoxin (iv) Chlorine - Essential for water- splitting reaction in photosynthesis Which of these are correctA. (i), (ii) & (iii)B. (ii), (iii) & (iv)C. (iii) & (iv)D. (i) & (ii) |
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Answer» Correct Answer - 2 Iron is required for activation of catalase. |
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| 69. |
The non-mineral elements areA. C, H, OB. N, Ca, MgC. Fe, Co, MnD. Cu, Mo, N |
| Answer» Correct Answer - A | |
| 70. |
Read the functions given below and identify the concerned nutrient. I. Activator of catalase. II. Important constituent of cytochrome. III. Important constituent of proteins involved in ETS. ltBrgt IV. Essential for chlorophyll synthesis.A. MoB. FeC. CuD. Ca |
| Answer» Correct Answer - B | |
| 71. |
Some fundtion of a nutrients element are given below (i). Important constituents of proteins involved in ETS (ii). Activator of catalase (iii). Important constituent of cytoshrome (iv). Essential for chlorophyll systhesis the concerned nutrient is_______A. CuB. FeC. CaD. Mo |
| Answer» Correct Answer - B | |
| 72. |
For its action, nitrogenase requiresA. High input of energyB. LightC. `Mn^(2+)`D. Super oxygen radicals |
| Answer» Correct Answer - A | |
| 73. |
With reference to mineral nutrition in plants, which one of the following pair is not correctly matched?A. Molybdenum - Required for nitrogen fixation and nitrate reductionB. Manganese - Required for intergrity of chloroplast membrane and for oxygen release in photosynthesisC. Iron - Required for development of chlorophyll and its pigments.D. Magnesium - involved in osmosis and ionic balance, and in opening and closing of stomata. |
| Answer» Correct Answer - 4 | |
| 74. |
Select the correctly matched pairA. Zinc-Helps to maintain the ribosome structureB. Magnesium-needed during the formation of mitotic spindleC. Calcium -Plays a role in the opening and closing of stomataD. Manganese-needed in the splitting of water to liberate oxygen during photosynthesis |
| Answer» Correct Answer - D | |
| 75. |
Which one of the following pairs is not correctly matched?A. Copper `" " `PlastocyaninB. Sulphur ` " " ` SerineC. Molybdenum Nitrate reductaseD. Zinc ` " " `Alcohol dehydrogenase |
| Answer» Correct Answer - 2 | |
| 76. |
For its action, nitrogenase requiresA. High input of energyB. LightC. ` Mn^(2 + ) `D. Super oxygen radicals |
| Answer» Correct Answer - A | |
| 77. |
Which one of the following is correctly matched ?A. Potassium - Readily mobilizationB. Bakane of rice seedings - F.SkoogC. Passive transport of nutrients - ATPD. Apoplast - Plasmodesmata |
| Answer» Correct Answer - A | |
| 78. |
Which one of the following is wrong statement ?A. Root nodule forming nitrogen fixers live as aerobes under free-living conditionsB. Phosphorus is a constituent of cell membranes, certain nucleic acids and all proteinsC. Nitrosomonas and Nitrobacter are chemoautrophsD. Anamaena and Nostoc are capable of fixing nitrogen in free-living state also |
| Answer» Correct Answer - 2 | |
| 79. |
Which one of the following is a wrong statement?A. Root nudule forming nitrogen fixers live as aerobesunder free-living conditions.B. Phosphorus is a constituent of cell membranes, certain nucleic acids, and all proteins.C. Nitrosomonas and Nitrobacter are chemoautotrophs.D. Anabaena and Nostoc are capable of fixing nitrogen in free-living state also. |
| Answer» Correct Answer - A | |
| 80. |
Which one of the following is wrong statement ?A. Phosphorus is a constituent of cell membranes, certain nucleic acids and all proteins.B. Nitrosomonas and Nitrobacter are chemoautotrophsC. Anabaena and Nostoc are capable of fixing nitrogen in free - living state also.D. Root nodule forming nitrogen fixers live as aerobes under free - living conditions. |
| Answer» Correct Answer - A | |
| 81. |
The first stable product of fixation of atmospheric nitrogen in leguminous plants isA. `NO_(3)^(-)`B. GlutamateC. `NO_(2)^(-)`D. Ammonia |
| Answer» Correct Answer - 4 | |
| 82. |
The first stable product of fixation of atmospheric nitrogen in leguminous plants isA. ammoniaB. `NO_(3)^(-)`C. glutamateD. `NO_(2)^(-)` |
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Answer» Correct Answer - A The process of convertion of nitrogen `(N_(2))` to ammonia is `underset(("Nitrogen"))(N_(2))to underset(("Diamide")) to underset(("Hydrazine"))(N_(2)H_(4))to underset(("Ammonia"))(2NH_(3))` |
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| 83. |
The first stable product of fixation of atmospheric nitrogen in leguminous plants isA. AmmoniaB. ` NO_3^(-) `C. GlutamateD. ` NO_(2)^(-) ` |
| Answer» Correct Answer - A | |
| 84. |
How do plants obtain iron from the soil ? |
| Answer» Plants obtain iron in the from of ferric ions (`Fe^(3+)`) | |
| 85. |
Symbiotic nitrogen fixation in non - leguminous plant is carried out byA. AzotobacterB. BrodyrhizobiunC. ClostridiumD. Frankia |
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Answer» Correct Answer - d |
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| 86. |
Major nitrogen fixation is carried out byA. lightningB. chemical industriesC. symbiotic bacteriaD. leaching |
| Answer» Correct Answer - C | |
| 87. |
Most of the plants obtain nitrogen from the soil in the form ofA. free nitrogen gasB. nitric acidC. nitratesD. nitrites |
| Answer» Correct Answer - C | |
| 88. |
The agent that keeps maetals in the soluble state is calledA. chelating agentB. balancing agentC. buffer agentD. catalytic agent. |
| Answer» Correct Answer - 1 | |
| 89. |
The common nitrogen-fixer in paddy fields isA. RhizobiumB. AzospirillumC. OscillatoriaD. Frankia |
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Answer» Correct Answer - B Azoespirilllum is a nitrogen fixing bacterium in paddy fields. It is very useful soil and root bacterium. It is associative symbiotic `N_(2)` fixing bacteria. When it is added to the soil, it multiplies in millions and can supply 20-40kg of nitrogen per hectare per season. It also producess growth promoting substanes like indole acetic acid (IAA), Gibberellins `(GA_(3))` and promotes root proliferation. these substances improve the plant growth and yield. |
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| 90. |
Read the following statement regarding the mineral (i) Both Rhiqobium and Frankia are free living in soil, but as symbionts, can fix atmospheric nitrogen. (ii) Ammonia synthesis by nitrogenase requires 16 ATP for each ammonia produced. (iii) While most of plants can assimilate nitrate as well as ammonium ions, the latter is quite toxic to plnats and hence cannot accumulate in them. (iv) Along with the transpiration stream, the nodules of some plants export the fixed nitrogen as urides. Which of these are correctA. (i), (iii) & (iv)B. (ii), (iii) & (iv)C. (iii) & (iv)D. All are correct |
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Answer» Correct Answer - 1 Ammonia synthesis by nitrogenase requires 8 ATP for each ammonia. |
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| 91. |
Nutrient which is essential for the opening of stomata isA. potassiumB. nitrogenC. copperD. iron |
| Answer» Correct Answer - A | |
| 92. |
Which of the following is considered to be the elements between macro-nutrients and micro-nutrientsA. IronB. NitrogenC. PhosporusD. Manganese |
| Answer» Iron occurs in the concentration of less than 1 mg/gm. However, its essentially was discovered along with other macroelements long before microselements were found to be required. Therefore, it is often regarded to be macroelement. | |
| 93. |
Name the most crucial enzyme found in root nodules for `N_(2)`- fixation ? Does it require a special pink coloured pigment for its functioning ? Elaborate. |
| Answer» Nitrogenase is the most crucial enzyme found in the root nodules for `N_(2)`-fixation. It is a Mo - Fe protein that catalyses the conversion of atomospheric nitrogen to ammonia. Pink coloured pigment called leghaemoglobin creates anaerobic conditions for the functioning of nitrogenase enzyme. | |
| 94. |
Name the pink pigment found in the root nodules of a legume. |
| Answer» Correct Answer - Leghaemoglobin | |
| 95. |
______conditions are created by lagnaemoglobin in the root nodule of a legume. |
| Answer» Leghaemoglobin is responsible for creating anaerobic conditions in the root nodules of the legume plant. It acts as an oxygen scavenger, protecting enzyme nitrogenase to come in contant with oxygen and help in the proper functioning of enzyme, i.e., conversion of atmospheric nitrogen to ammonia `(NH_(3))`. | |
| 96. |
Critical toxicity level caused by mineral nutrients means reduction in dry weight of plant tissue byA. `5%`B. `10%`C. `20%`D. `25%` |
| Answer» Correct Answer - 2 | |
| 97. |
Most of the dry weight of a free comes from atoms acquired fromA. soilB. waterC. airD. decomposing leaves |
| Answer» Correct Answer - 3 | |
| 98. |
Small clay particles hold calcium, potassium and magnesium ions because surfaces of clay particles areA. smoothB. covered with tiny crevicesC. negatively chargedD. waxy |
| Answer» Correct Answer - 3 | |
| 99. |
Which of the following is a flowering plant with nidules containing filamentous nitrogen-fixing microorganismA. Cicer arietinumB. Casuarina equisetifoliaC. Crotalaria junceaD. Cycas revolute |
| Answer» Correct Answer - B | |
| 100. |
Nitrogen fixation in root nodules of Alnus is brought about byA. AzorhizobiumB. BradyhizobiumC. ClostridiumD. Frankia |
| Answer» Correct Answer - D | |