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. |
Quantasomes are found inA. MitochondriaB. ChloroplastC. LysosomeD. Endoplasmic reticulum |
| Answer» Correct Answer - B | |
| 52. |
First transitory chemical formed by reaction between `CO_(2)` and RuBP isA. PGAL/GAPB. PGAC. 2-carboxy 3-keto, 1,5-bisphosphoribotolD. DiHAP |
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Answer» Correct Answer - C First transitory chemical formed by reaction between `CO_(2)` and RuBP is 2-carboxy 3-keto, 1,5-biphosphoribotol. |
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| 53. |
Sunken stomata are usually found inA. `C_3`- plantsB. CAM plantsC. insectivorous plantsD. phanerogams |
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Answer» Correct Answer - B Sunken stomata are usually found in crassulacean acid metabolic plants, Such stomata remian situated below the epidermis and open at night . |
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| 54. |
Water stress causes stomata to (A)____ hence reducing the (B)_____ availability. |
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Answer» Correct Answer - A-close B-`CO_(2)` |
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| 55. |
In `C_(4)`pathway, RuBP accepts `CO_(2)` insideA. Xylem parenchymaB. Pholem parencymaC. Mesophyll cellsD. Bundle sheath cells |
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Answer» Correct Answer - D In `C_(4)` pathway, RuBP accepts `CO_(2)` inside bundle sheath cells. |
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| 56. |
Calling the biosynthetic phase of photosynthesis as the dark reaction is a misnomer. |
| Answer» Correct Answer - 1 | |
| 57. |
Which of the following is the first compound that accepts carbon dioxide during dark phase of photosynthesisA. NADPB. RuBPC. FerridoxinD. Cytohchrome |
| Answer» Correct Answer - B | |
| 58. |
Dark reaction in photosynthesis is called so becauseA. it can occur in dark alsoB. it does not directly depend on light energyC. it cannot occur during day lightD. it occurs more rapidly at night |
| Answer» Correct Answer - B | |
| 59. |
Dark reaction in photosynthesis is called so becauseA. It can occur in dark aloneB. It does not require direct light energyC. It cannot occur during day timeD. It occurs more rapidly at night |
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Answer» Correct Answer - B Dark reactio in photosynthesis is called so because it does not require direct light energy. |
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| 60. |
Reducing power which is transferrred from light reaction of photosynthesis to the dark reaction isA. ATPB. NADPHC. NADHD. `FADH_(2)` |
| Answer» Correct Answer - B | |
| 61. |
In photosynthesisA. ATP is formed in light reaction and glucose in dark reactionB. Both ATP and glucose are produced in dark reactionC. Both ATP and glucose arc produced in light reactionD. Both ATP and glucose are formed in light |
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Answer» Correct Answer - A In photosynthesis ATP is formed in light reaction and glucose in dark reaction. |
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| 62. |
PGA as the first `CO_(2)` fixation product was discovered in photosynthesis ofA. AlgaB. BryophyteC. GymnospermD. Angiosperm |
| Answer» Correct Answer - A | |
| 63. |
PGA as the first `CO_(2)` fixation product was discovered in photosynthesis ofA. AngiospermB. AlgaC. BryophyteD. Gymnosperm |
| Answer» Correct Answer - B | |
| 64. |
PGA as the first `CO_(2)` fixation product was discovered in photosynthesis ofA. bryophteB. gymnospermC. angiospermD. alga |
| Answer» Correct Answer - D | |
| 65. |
Dark reaction in photosynthesis is called so becauseA. It can occur in dark alsoB. It does not depend on light energyC. It cannot occur during day lightD. It occur more rapidly at night |
| Answer» Correct Answer - A | |
| 66. |
During dark reaction the three carbon atoms of 3-PGA are derived fromA. RuBP onlyB. `CO_(2)` onlyC. RuBP + `CO_(2)`D. RuBP +`CO_(2)` + PEP |
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Answer» Correct Answer - C During dark reaction the three carbon atoms of 3-PGA are derived from `RuBP+CO_(2)`. `RuBP+CO_(2) overset(RuBisCO)to PGA` |
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| 67. |
Enzyme involved in the formation of Fructose 1, 6-diphosphate from phosphoglyceraldehyde isA. isomeraseB. aldolaseC. RuBisCOD. phosphatase |
| Answer» Correct Answer - B | |
| 68. |
During formation of 1,3-diphosphoglyceric acid from 3 phosphoglyceric acid , the phosphatic donor isA. `H_3PO_4`B. ATPC. ADPD. GTP |
| Answer» Correct Answer - B | |
| 69. |
Substrate of photorespiration isA. OAAB. Glycolic acidC. 3-PGAD. PEP |
| Answer» Correct Answer - B | |
| 70. |
The substrate for photorespiration isA. Phosphogluceric acidB. GlycolateC. SerineD. Glycine |
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Answer» Correct Answer - B The substrate for photorespiration is glycolate. |
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| 71. |
The primary `CO_2` acceptor in `CO_2` fixation in `C_4` pathway isA. oxaloacetic acidB. citric acidC. RuBPD. Phosphoenol pyruvate |
| Answer» Correct Answer - D | |
| 72. |
The primary `CO_2` acceptor in `CO_2` fixation in `C_4` pathway isA. phosphoglyceric acidB. glyceraldehyde phosphateC. phosphoenol pyruvateD. oxaloacetic acid |
| Answer» Correct Answer - C | |
| 73. |
The primary acceptor , during ` CO_(2)` fixation in ` C_(3)` plants , isA. Phosphoenolphyruvate (PEP)B. Ribulose , 1 , 5- diposphate (RuDP)C. Phosphoglyceric acid (PGA)D. Ribulose monophosphate (RMP) |
| Answer» Correct Answer - B | |
| 74. |
The primary `CO_(2)` acceptor molecule during the ` C_(3)` cycle is aA. Ketose sugarB. 5 C compoundC. PEPD. Both (1) & (2) |
| Answer» Correct Answer - D | |
| 75. |
`CO_(2)` acceptor and carboxylating enzyme in C3 plants are , respectively,A. PEEP, PEPCOB. RuBP, RUBISCOC. OAA,RUBISCOD. 3 PGA, RUBISCO |
| Answer» Correct Answer - B | |
| 76. |
The initial `CO_(2)` acceptor in `C_(4)` plants isA. RuBPB. PGAC. PEPD. OAA |
| Answer» Correct Answer - A | |
| 77. |
Which one does not differ between a `C_(3)` and a `C_(4)` plant ? I Initial `CO_(2)` acceptor Extent of photorespiration Enzyme catalyzing reaction that fixes `CO_(2)` Presence of Calvin cycle Leaf anatomyA. I and VB. IVC. II and IIID. IV |
| Answer» Correct Answer - B | |
| 78. |
Dark reaction of photosynthesis occurs inA. matrixB. granaC. stromaD. cytoplasm |
| Answer» Correct Answer - C | |
| 79. |
Calvin cycle occurs inA. MitochondriaB. ChloroplastC. CytoplasmD. Glyoxysomes |
| Answer» Correct Answer - B | |
| 80. |
The number of carbon atoms present in ribulose biphosphate isA. 6B. 5C. 8D. 3 |
| Answer» Correct Answer - B | |
| 81. |
Assertion : Each molecule of ribulose-1 ,5 biphosphate fixes one molecule of `CO_(2)` Reason : Three molecules of NADPH and two ATP are required for fixation of one molecule of `CO_(2)`A. If both the asserition and the reasion are true and the reason is a correct explanation of the assertionB. If both the assertion and reasoni s not a correct ecplanation of the assertioC. If the assertion is true but the reason is falseD. If both the asseertion and reason are false |
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Answer» Correct Answer - C Each molecule of ribulose-1, 5-biphosphate fixes one molecule of carbon dioxide with the addition of water, thereby resulting in the formation of two molecules of 3-phosphoglyceric acid (3-PGA). The fixation and reduction of one molecule of `CO_(2)` requires three molecules of ATP and two of NADPH, Coming from the photochemical reactions. |
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| 82. |
Carbon dioxide joins the route of photosynthesis duringA. photosystem-IB. photosystem-IIC. dark reactionD. light reaction |
| Answer» Correct Answer - C | |
| 83. |
What is the outline sequence by which carbon dioxide may be incorporated into starch by photosynthesis ?A. `PGA +CO_2 to RuBP to ` Triose Phosphate `to` Hexose phosphate `to` StarchB. `PGA+CO_2 to` RuBP `to` Hexose phosphate `to` Triose phosphate `to` StarchC. `RuBP+CO_2 to` PGA `to` Hexose phosphate `to` Triose phosphate `to` StarchD. `RuBP +CO_2 to PGA to` Triose phosphate `to` Hexose phosphate `to` Starch. |
| Answer» Correct Answer - D | |
| 84. |
Energy required for ATP synthesis in PSII comes fromA. Protien gradientB. Electron gradientC. Reduction of glucoseD. Oxidation of glucose |
| Answer» Correct Answer - A | |
| 85. |
Energy required for ATP synthesis in PSII comes fromA. proton gradientB. elctron gradientC. reduction of glucoseD. oxidation of glucose |
| Answer» Correct Answer - A | |
| 86. |
Approximate number of chlorophlyll molecules required to evolve one molecule of `O_2` areA. 2480 moleculesB. 2280 moleculesC. 2180 moleculesD. 2275 molecules |
| Answer» Correct Answer - A | |
| 87. |
How many quanta are required in photosynthesis to release one molecuole of `O_2` ?A. `12`B. `10`C. `8`D. `20` |
| Answer» Correct Answer - C | |
| 88. |
For the process of photosynthesise all expectionA. Water, mineralsB. Light, chlorphyllC. `CO_(2)` optimum temperatureD. Oxygen , sucrose |
| Answer» Correct Answer - D | |
| 89. |
`C_(4)` cycle was discovered byA. Hatch and SlackB. CalvinC. HillD. Arnon |
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Answer» Correct Answer - A `C_(4)` path or dicarboxlic acid pathway is an alternateive path of `CO_(2)`- fixation in photosynthesis. It was discovered by MD Hatch and CR slack in 1967, so also known as Hatch-Slack cycle. |
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| 90. |
Which one occurs both during cyclic and non-cyclic modes of photophosphorylationA. involvement of both PS-I and PS-IIB. formation of ATPC. Release of `O_(2)`D. Formation of NADPH |
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Answer» Correct Answer - B Cyclic photophosphorylation is that type of light energised ATP synthesis in which electron expelled by excited photocentre does not return to them. It involves two photochemical systems (PS-I and PS-II) and produces assimilatory power (ATP and NADPH). In both, cyclic and non-cyclic photophoshorylation, formation of ATP takes place. |
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| 91. |
Which one occurs both during cyclic and non-cyclic modes of photophosphorylation?A. Involvement of both PS I and PS IIB. Fonnation of ATPC. Release of `O_(2)`D. Fonnation of NADPH |
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Answer» Correct Answer - B Formation of ATP occurs both during cyclic and non-cyclic modes of photophosphorylation. |
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| 92. |
Cyclic photophosphorylation occurs when only light of wavelengths _______ are available. (i) Below 680 nm (ii) Beyond 680 nm (iii) 400 nm and below (iv) Beyond 400 nm |
| Answer» Correct Answer - Beyond 680 nm. | |
| 93. |
Emerson effect is related toA. decrease in photosynthesis in presence of high light intensityB. decrease in photosynthesis when lights of two different wavelengths are provided togetherC. increase in photosynthesis in presence of monochromatic lightD. increase in photosynthesis when lights of two different wavelenghts are used |
| Answer» Correct Answer - D | |
| 94. |
According to Emerson the fall in quantum yield above 680 nm is calledA. photosynthetic dropB. Emerson dropC. Warburg effectD. red drop |
| Answer» Correct Answer - D | |
| 95. |
The term quantasomers was given byA. RubenB. Park and BigginsC. TW EngelmannD. Emerson |
| Answer» Correct Answer - B | |
| 96. |
Basic structure of al chlorophylls compriesA. cytochrome systemB. flavoproteinsC. porphyrin systemD. plastocyanin |
| Answer» Correct Answer - C | |
| 97. |
Which wavelength of light carry out photosynthesis in bacteriaA. blurB. redC. ultravioletD. near infra red or far red |
| Answer» Correct Answer - D | |
| 98. |
The enzyme responsible for primary carboxylaylation in `C_3` - plants isA. pyruvate carboxlasesB. succinic dehydrogenaseC. hexokinaseD. RuBP carboxylase/ oxygenase |
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Answer» Correct Answer - D RuNP carboxylase enzyme catalyses the primary carboxylation reaction in which `CO_2` combines with RuBP (Ribulose biophosphate ) to form 2 molecules of 3 PGA (Phosphoglyceric Acid). It also shows oxygenase activity. |
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| 99. |
The oxygen evolved during photosynthesis comes from water molecules . Which one of the following pairs of elemnets is involved in this reaction ?A. Manganese and chlorineB. Manganese and potassiumC. Magnesium and molybdenumD. Magnesium and chlorine |
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Answer» Correct Answer - A Photolysis of water during photosynthesis evolve nascent oxygen in the presence of manganese, calcium and chloride ions. |
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| 100. |
In a chloroplast the highest number of protons are found inA. Antennae complexB. StromaC. Lumen of thylakoidsD. Inter membrane space |
| Answer» Correct Answer - C | |