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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.
| 551. |
Photosynthesis is the fastest inA. Blue lightB. Intermittent white lightC. Red lightD. Green light |
| Answer» Correct Answer - B | |
| 552. |
Rate of photosynthesis is ____________than that of respiration during the day timeA. higherB. lowerC. sameD. equal |
| Answer» Correct Answer - A | |
| 553. |
Both respiration and photosynthesis requireA. sunlightB. green cellsC. cytochromesD. organic substrate |
| Answer» Correct Answer - C | |
| 554. |
The first step in dark reaction of photosynthesis isA. Formation of ATPB. Attachment of carbon dioxide to a pentose sugarC. Excitement of an electron of chlorophyll by photon of lightD. Ionisation of water |
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Answer» Correct Answer - B The first step in dark reaction of photosynthesis is attachment of carbon dioxide to a pentose sugar. `underset("Pentose sugar")(RuBP)+CO_(2) to PGA` |
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| 555. |
Respiration initated in chloroplasts and occurs in light is calledA. Aerobic respirationB. Anaerobic respirationC. FermentationD. Photorespiration |
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Answer» Correct Answer - D Respiration initiated in chloroplasts and occuring in light in called photorespiration. |
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| 556. |
What is the net consumpition of ATP and NADPH for every `CO_(2)` molecule fixed in ` C_(4)` plants ? |
| Answer» Five molecules of ATP and 2 molecules of NADPH are net consumed for every `CO_(2)` molecule fixed in `C_(4)` plants . | |
| 557. |
Gross primary productivity is the rate of production of______during photosynthesis.A. organic matterB. oxygenC. carbon dioxideD. chlorophyll |
| Answer» Correct Answer - B | |
| 558. |
Which of the following statements regarding `C_(4)` pathway is falseA. The primary `CO_(2)` acceptor is 5 carbon moleculeB. The enzyme responsible for `CO_(2)` fixation is PEP caseC. The mesophyll cell lack RuBis Co enzymeD. The `C_(4)` acid OAA is formed in the mesophyll cells |
| Answer» Correct Answer - A | |
| 559. |
The process in which water is split during photosynthesis isA. PhotolysisB. HydrolysisC. PlasmolysisD. Haemolysis |
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Answer» Correct Answer - A The process in which water is split during photosynthesis is photolysis. |
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| 560. |
`C_(4)` plant shows efficiency even inA. Low concentration of `CO_(2)`B. Low temperatureC. High `CO_(2)` concentrationD. At low water availability |
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Answer» Correct Answer - A `C_(4)` plants shows efficiency evem in low concentration of `CO_(2)` |
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| 561. |
`C_(4)` plant shows efficiency even inA. Low `CO_(2)` concentrationB. Low temperatureC. High `O_(2)` concentrationD. At low water |
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Answer» Correct Answer - A in `C_(4)` plants poor supply of `CO_(2)`. Because there is a internal supply of `CO_(2)`. So these plants can survive in poor `CO_(2)` conditions. |
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| 562. |
During photosynthesis `O_(2)` is liberated by oxidation ofA. `CO_2`B. `H_20`C. phosphoglyceraldehydeD. None of these |
| Answer» Correct Answer - B | |
| 563. |
During photosynthesis `O_(2)` is liberated by oxidation ofA. `H_(2)O`B. PhosphoglyceraldehydeC. None of the aboveD. |
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Answer» Correct Answer - A During photosynthesis `O_(2)` is liberated by oxidation of `H_(2)O` |
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| 564. |
Which one is photophosphorylationA. ADP+ AMP `overset("Light energy")to`ATPB. ADP+ Inorganic phosphate`overset("Light energy")to`ATPC. ADP + Inorganic `PO_(4)to` ATPD. |
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Answer» Correct Answer - B Photophosphorylation is ATP formation. `ADP+"Inorganic phosphate ADP +AMP overset("Light energy")to ATP` |
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| 565. |
CAM photosynthesis occurs in plants withA. Thin green leaves with reticulate venationB. Thin green leaves with parallel venationC. Fleshy green leavesD. Thin coloured leaves |
| Answer» Correct Answer - C | |
| 566. |
In what respects are the photosynthesis adaptations of `C_(4)` plants and CAM plants similar?A. In both cases, the stomata normally close during the dayB. Both types of plants make their sugar without the Calvin-Benson cycleC. In both cases, an enzyme other than rubisco carries out the first step in carbon fixationD. Neither `C_(4)` plants nor CAM plants have grana in their chloroplasts |
| Answer» Correct Answer - C | |
| 567. |
Write the requriement for chemiosmotic ATP synthesis |
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Answer» Correct Answer - Membrane Proton pum Proton gradient ATPase |
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| 568. |
The photosynthetic unit having 250 chlorophyll molecules is calledA. photon B. quantasomeC. peroxysomeD. oxysome |
| Answer» Correct Answer - B | |
| 569. |
The absorption of radiant energy causesA. Reduction of chlorophyllB. Oxidation of ChlorophyllC. Absorption of `CO_(2)`D. Evolution of `O_(2)` |
| Answer» Correct Answer - B | |
| 570. |
The chemiosmotic theory ofr photophosphorylatrion was given byA. P-MitchellB. AmonC. ArnoldD. Anderson |
| Answer» Correct Answer - A | |
| 571. |
Action spectrum of photosynthesis was discovered byA. Van NielB. EngelmanC. BlackmanD. None of these |
| Answer» Correct Answer - B | |
| 572. |
Name the algae which was used to describe action spectrum of photosynthesis |
| Answer» Correct Answer - Cladophora | |
| 573. |
Which of the following scientist plotted the action spectrum of photosynthesis ?A. TW EngelmannB. Robin HillC. GC StocksD. Park and Biggins |
| Answer» Correct Answer - A | |
| 574. |
Assume a thylakoid which is somehow punctured so that the interior of the thylakoid is no longer separated from the stroma. This damage will have the most direct effect on which of the following processes?A. Splitting of waterB. Absorption of light energy by chlorophyllC. Flow of electrons from photosystem II to photosystem ID. Synthesis of ATP |
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Answer» Correct Answer - D If thylakoid is punctured, then the interior of the thylakoid is no longer separated from the stroma and this leads to stoppage of ATP synthesis. |
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| 575. |
The specific function of light energy in the proess of photosynthesis is toA. Activate chlorophyllB. Split waterC. raduce carbon dioxideD. synthesize glucose |
| Answer» Correct Answer - A | |
| 576. |
The scientist who first observed photorespitation isA. Dicker and TijoB. Otto WarburgC. Ruben and KamenD. Joseph Priestly |
| Answer» Correct Answer - B | |
| 577. |
How many ATP and NADPH are formed during photorespiration ?A. 3 and 6 respectivelyB. 4 and 5 respectivelyC. 1 and 9 respectivelyD. zero |
| Answer» Correct Answer - D | |
| 578. |
PS-II is not concerned withA. photolysis of waterB. non-cyclic phosphorylationC. reduction of `CO_2`D. release of energy |
| Answer» Correct Answer - C | |
| 579. |
Which is not true for CAM plants ?A. Scotoactive opening of stomataB. Dark acidification of cytoplasmC. Separation of cytopasmD. Separation of Hatch-Slack and `O_(3)` cycle in time |
| Answer» Correct Answer - D | |
| 580. |
The process of photophosphorylation was discovered byA. PriestlyB. CalvinC. ArnonD. Warburg |
| Answer» Correct Answer - C | |
| 581. |
Which technique has helped in inverstigation of calvin cycle ?A. Radioactive isotope techniqueB. Biotechnology techinqueC. Photometric techniqueD. Flash light experimental technique |
| Answer» Correct Answer - A | |
| 582. |
The process of photophosphorylation was discovered byA. CalvinB. ArnonC. PriestlyD. Warburg |
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Answer» Correct Answer - B Arnon etal. (1954) first of all demonstrated that isolated chloroplasts can produce ATP from ADP+ ip and they called this ATP production as photophosphorylation. |
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| 583. |
Photosynthesis consists of esseentially two biological reaction systems, One followed by the other, One followed by the other, the second of these systems does which of the followingA. Fixes `CO_(2)`B. Traps light energyC. Synthesizes starchD. Works only in the presense of light |
| Answer» Correct Answer - A | |
| 584. |
Chemosynthetic bacteria obtain energy fromA. SunB. Infra red raysC. Organic substanceD. Inorganic chemicals |
| Answer» Correct Answer - D | |
| 585. |
The first important biological investigation which led to the conclusion that plant makes its substance from water and not from soil was carried out byA. LamarckB. De VriesC. Van HelmontD. Darwin |
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Answer» Correct Answer - C Helmont concluded that "all food of the plant is derived from raini water and not from soil and all parts of the plant develop from water". |
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| 586. |
Who recived the Noble Prize the working out the early carbonpathway of photoynthesisA. CalvinB. KrebsC. KhoranaD. Wastson |
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Answer» Correct Answer - A Malvin calvin (1954) traed the pathway of carbon in photosynthesis and gave the `C_(3)` cycle, (now known after him as calvin cycle). He was awarded nobel for this work in 1960. |
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| 587. |
Which technique has helped in inverstigation of calvin cycle ?A. X-Ray cyrstallographyB. X-Ray techniqueC. Radioactive isotope (autoradiography) techniqueD. Intermittent light |
| Answer» Correct Answer - C | |
| 588. |
Which of the following technique was used by Calvin in determing carbon pathwayA. ChromatographyB. ElectronphorosisC. SpectrophotometeryD. Histochemistry |
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Answer» Correct Answer - A Malvin calvin and his coworkers in 1954 by using the methods of radio active tracer technique, chromatography and autoradiography. |
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| 589. |
Which set of terms most accurately describes the pathway taken by a molecule of `CO_(2)` from the atmosphere to the point where it enters the calvin cycle ?A. stomatal aperture, inter cellular space, mesophyll cell, chloroplastB. stomatal aperture, epidermal cell, mesophyll cell, chloroplastC. stomatal guard cell, intercellular space, mesophyll cell membrane, chloroplastD. stomatal guard cell, intercellular space, phloem serve tube, chloroplast |
| Answer» Correct Answer - A | |
| 590. |
The cencentration of `CO_(2)` in the atmosphere is approximatelyA. `0.003%`B. `0.03%`C. `0.30%`D. `3.00 %` |
| Answer» Correct Answer - B | |
| 591. |
Element essential for photolysis of water isA. NitrogenB. ChlorineC. CarbonD. Oxygen |
| Answer» Correct Answer - B | |
| 592. |
Photorespiration is also known asA. `C_(2)` cycleB. `C_(3)` cycleC. `C_(4)` cycleD. `C_(1)` cycle |
| Answer» Correct Answer - A | |
| 593. |
Which of the following elements are essential for the photolysis of water ?A. Ca and ClB. Mn and ClC. Zn and ID. Cu and Fe |
| Answer» Correct Answer - B | |
| 594. |
Which of the following is involved in the transfer of elctrons in photosynthesis ?A. PhytochromeB. CytochormeC. PhotohormoneD. Desmosome |
| Answer» Correct Answer - B | |
| 595. |
The PS Il and PS I in Z-scheme are connected byA. Electron transport systemB. Light harvesting complexC. Cyclic photophosphorylationD. Non-cylic photophosphorylation |
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Answer» Correct Answer - A The PS II and PS I in Z-scheme are connected by electron transport system. |
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| 596. |
`C_(4)` plants are found amongA. Gramineae onlyB. Monocots onlyC. Dicots onlyD. Monocotes as well as dicots |
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Answer» Correct Answer - D `C_(4)` plants mostly in monocut plants (Artiplex, sugarcane, maize, cyperus) and some dicots (Amaranthus). |
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| 597. |
Energy transfer in photosynthesis occurs asA. `"Phycoerythrin"to"Phycocyanin"to"Carotenoid"to"Chlorophyll a"`B. `"Chlorophyll b"to"Carotenoid"to"Phycoerythrin"to"Chlorophyll a"`C. `"Phycocyanin"to"Phycoerythrin"to"Carotenoid"to"Chlorophyll a"`D. `"Chlorophyll "to"Carotenoid"to"Phycocyanin"to"Chlorophyll a"` |
| Answer» Correct Answer - C | |
| 598. |
Which of the following is a 4-carbon compoundA. Oxaloacetic acidB. Phosphoglyceric acidC. Ribulose bis phosphateD. Phosphoenol pyruvate |
| Answer» Correct Answer - A | |
| 599. |
Sugarcane show high efficiency of `CO_(2)` fixation because ofA. Calvin cycleB. EMP pathwayC. Hatch and Slack pathwayD. TCA cycle |
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Answer» Correct Answer - C `"Sarcane/"(C_(4)` plant) shows high efficiency of `CO_(2)` fixation because it performs Hatch and Slack pathway |
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| 600. |
A possible location of the cyclic photophosphorylationA. GranaB. StromaC. Stroma lamellaeD. Thylakoid |
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Answer» Correct Answer - C A possible location of the cyclic photophosphorylation is stroma lamellae. |
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