NEET Biology Photosynthesis in Higher Plants Question Bank

done Light Reaction Pigments Total Questions - 125

• question_answer1)
  Chlorophyll molecules has the structure like
  A)
  Monopyruvic done clear
  B)
  Dipyruvic done clear
  C)
  Tripyruvic done clear
  D)
  Tetrapyruvic done clear
  View Solution play_arrow

• question_answer2)
  Chlorophyll 'e' is generally present in
  A)
  Thallophytes done clear
  B)
  Rhodophytes done clear
  C)
  Mycophytes done clear
  D)
  Xanthophytes done clear
  View Solution play_arrow

• question_answer3)
  The light phase of photosynthesis is called
  A)
  Hill reaction done clear
  B)
  Photo action done clear
  C)
  Pigment action done clear
  D)
  Chlorophyllous process done clear
  View Solution play_arrow

• question_answer4)
  Ferrodoxin contain [Haryana PMT 2005]
  A)
  Mg done clear
  B)
  CO done clear
  C)
  Iron done clear
  D)
  Nitrites done clear
  View Solution play_arrow

• question_answer5)
  Which type of phosphorylation takes place in photosynthesis
  A)
  Cyclic done clear
  B)
  Non-cyclic done clear
  C)
  Both [a] and [b] done clear
  D)
  None of the above done clear
  View Solution play_arrow

• question_answer6)
  Unidirectional flow of electrons in photophosphorylation takes place in
  A)
  Cyclic done clear
  B)
  Non-cyclic done clear
  C)
  Pseudocyclic done clear
  D)
  All the above done clear
  View Solution play_arrow

• question_answer7)
  In light reaction of photosynthesis, chlorophyll is subjected to
  A)
  Destruction done clear
  B)
  Permanent reduction done clear
  C)
  Oxidation and reduction done clear
  D)
  Neutralization done clear
  View Solution play_arrow

• question_answer8)
  Photosynthetic pigments in chloroplast are embedded in membrane  of [CBSE PMT 1991]
  A)
  Thylakoids done clear
  B)
  Photoglobin done clear
  C)
  Matrix done clear
  D)
  Envelope of chloroplast done clear
  View Solution play_arrow

• question_answer9)
   Ferredoxin is a component  of [CBSE PMT 1991]
  A)
  Hill reaction done clear
  B)
  Photosystem-I done clear
  C)
  P-680 done clear
  D)
  Photosystem-II done clear
  View Solution play_arrow

• question_answer10)
  Which of the following pigment is yellow in colour
  A)
  Chlorophyll 'a' done clear
  B)
  Chlorophyll 'b' done clear
  C)
  Carotene done clear
  D)
  Xanthophyll done clear
  View Solution play_arrow

• question_answer11)
  Which of the following is the non-polar part of chlorophyll
  A)
  Phytol done clear
  B)
  Porphyrin done clear
  C)
  Pyrrol done clear
  D)
  None of the above done clear
  View Solution play_arrow

• question_answer12)
  Which of the following wavelength occur in red part of the spectrum
  A)
  470 nm done clear
  B)
  390 nm done clear
  C)
  680 nm done clear
  D)
  830 nm done clear
  View Solution play_arrow

• question_answer13)
  Which of the following product of photosynthesis is produced first
  A)
  Glucose done clear
  B)
  Oxygen done clear
  C)
  Both [a] and [b] together done clear
  D)
  None of the above done clear
  View Solution play_arrow

• question_answer14)
  Which of the following is black-yellow pigment of carrot roots
  A)
  Alpha-carotene done clear
  B)
  Beta-carotene done clear
  C)
  Violoxanthin done clear
  D)
  Fucoxanthin done clear
  View Solution play_arrow

• question_answer15)
  Chlorophyll molecule (PS-II) when excited and electron so released passes first into
  A)
  Plastoquinone done clear
  B)
  Plastocyanin done clear
  C)
  Ferredoxin done clear
  D)
  Ferredoxin reducing substrate done clear
  View Solution play_arrow

• question_answer16)
  Solarisation is [BHU 2005]
  A)
  Formation of chlorophyll done clear
  B)
  Destruction of chlorophyll done clear
  C)
  Utilisation of sunlight done clear
  D)
  Effects of solar light done clear
  View Solution play_arrow

• question_answer17)
  Elements required for photolysis of water [BHU 2005]
  A)
  Mn done clear
  B)
  Mg done clear
  C)
  Fe done clear
  D)
  Zn done clear
  View Solution play_arrow

• question_answer18)
  How many molecules of water should be photolysed to form a\[NADP{{H}_{2}}\]molecule
  A)
  4 done clear
  B)
  2 done clear
  C)
  6 done clear
  D)
  1 done clear
  View Solution play_arrow

• question_answer19)
  If E is Emerson effect, x is the rate of oxygen production in mixed beam of light, y is the rate of\[{{O}_{2}}\]production in low wavelength of light and z is the rate of\[{{O}_{2}}\]evolution in high intensity of red light. What will be the value of  E
  A)
  \[\frac{x-u}{z}\] done clear
  B)
  \[\frac{x-z}{u}\] done clear
  C)
  \[\frac{z-u}{x}\] done clear
  D)
  \[\frac{z-x}{u}\] done clear
  View Solution play_arrow

• question_answer20)
  The process for which manganese and chloride ions are required is
  A)
  Photolysis of water done clear
  B)
  For transfer of\[{{H}^{+}}\]ion to NADP done clear
  C)
  For transfer of charge of hydroxyl ion to chlorophyll done clear
  D)
  None of the above done clear
  View Solution play_arrow

• question_answer21)
  What is the quantum yield of photosynthesis
  A)
  8% done clear
  B)
  12% done clear
  C)
  9% done clear
  D)
  33% done clear
  View Solution play_arrow

• question_answer22)
  What is the absorption maxima of P-700
  A)
  \[\text{700}\overset{\text{o}}{\mathop{\text{A}}}\,\] done clear
  B)
  683 nm done clear
  C)
  700 cm done clear
  D)
  700 nm done clear
  View Solution play_arrow

• question_answer23)
  \[NADP{{H}_{2}}\]is generated through [CBSE PMT 1997]
  A)
  Glycolysis done clear
  B)
  Photosystem-I done clear
  C)
  Photosystem-II done clear
  D)
  Anaerobic respiration done clear
  View Solution play_arrow

• question_answer24)
  Quantasomes are present in
  A)
  Pigment system-I done clear
  B)
  Pigment system-II done clear
  C)
  Both [a] and [b] done clear
  D)
  None of the above done clear
  View Solution play_arrow

• question_answer25)
  Which of the chlorophyll type ejects the electron during photophosphorylation
  A)
  Chlorophyll 'b' done clear
  B)
  Chlorophyll 'a' done clear
  C)
  Chlorophyll 'a' and 'b' done clear
  D)
  Xanthophyll done clear
  View Solution play_arrow

• question_answer26)
  In\[{{C}_{3}}\]plants, phosphoketopentose epimerage is required for converting
  A)
  Ribose into ribulose done clear
  B)
  Xylulose to ribulose\[1,5Di\,\,P{{O}_{4}}\] done clear
  C)
  Erythrose to xylulose done clear
  D)
  None of the above done clear
  View Solution play_arrow

• question_answer27)
  Photosystem-II occurs in [CBSE PMT 1992; RPMT 1999; BHU 2001]
  A)
  Stroma done clear
  B)
  Grana done clear
  C)
  On surface of mitochondria done clear
  D)
  On cytochrome done clear
  View Solution play_arrow

• question_answer28)
  The source of\[{{O}_{2}}\]liberated in photosynthesis in green plants is [CPMT 1982, 84, 91, 94, 95; DPMT 1983, 84; MP PMT 1984, 2002; Bihar MDAT 1992; RPMT 1999]
  A)
  Photosynthetic enzyme done clear
  B)
  Carbohydrate present in leaf done clear
  C)
  Water done clear
  D)
  Carbon dioxide done clear
  View Solution play_arrow

• question_answer29)
  In blue-green algae photosystem-II contain an important pigment concerned with photolysis of water it is called [BHU 1989, 90]
  A)
  Beta carotene done clear
  B)
  Chlorophyll 'b' done clear
  C)
  Cytochrome 'c' done clear
  D)
  Phycocyanin done clear
  View Solution play_arrow

• question_answer30)
  The site of oxygen evolution and photosynthetic phosphorylation in chloroplast are [MP PMT 1988]
  A)
  Matrix done clear
  B)
  Grana stacks done clear
  C)
  Inner wall of chloroplast done clear
  D)
  Surface of chloroplast done clear
  View Solution play_arrow

• question_answer31)
  The specific function of light energy in the process of photosynthesis is to [CPMT 1978, 81, 84; MP PMT 1984, 89]
  A)
  Activate chlorophyll done clear
  B)
  Split water done clear
  C)
  Reduce carbon dioxide done clear
  D)
  Synthesize glucose done clear
  View Solution play_arrow

• question_answer32)
  In cyclic photophosphorylation which one of the following is formed [AMU 1988]
  A)
  ATP done clear
  B)
  NADP and ATP done clear
  C)
  \[NAD{{H}_{2}}\]and\[{{O}_{2}}\] done clear
  D)
  \[NADP{{H}_{2}}\], \[ATP\]and\[{{O}_{2}}\] done clear
  View Solution play_arrow

• question_answer33)
  NADP is converted into\[NADP{{H}_{2}}\]in [CBSE PMT 1988]
  A)
  Photosystem-I done clear
  B)
  Non-cyclic photophosphorylation done clear
  C)
  Calvin cycle done clear
  D)
  Photosystem-II done clear
  View Solution play_arrow

• question_answer34)
  When a cell convert light energy into chemical energy, which of the following reaction would take place [MP PMT 1989; BHU 1980]
  A)
  ADP + IP = ATP done clear
  B)
  ATP - IP = ADP done clear
  C)
  AMP + IP = ADP done clear
  D)
  GDP + P = GTP done clear
  View Solution play_arrow

• question_answer35)
  The brown colour of some algae is due to the presence of pigments [DPMT 1991]
  A)
  Chlorophyll done clear
  B)
  Phycocyanin done clear
  C)
  Carotene done clear
  D)
  Fucoxanthin done clear
  View Solution play_arrow

• question_answer36)
  Pigment system-I recieves radiant energy and releases electron [MP PMT 1992]
  A)
  Chlorophyll-683 done clear
  B)
  Chlorophyll-673 done clear
  C)
  Chlorophyll-695 done clear
  D)
  P-700 done clear
  View Solution play_arrow

• question_answer37)
  The basic structure of all chlorophyll comprises of [BHU 1983]
  A)
  Porphyrin system done clear
  B)
  Cytochrome system done clear
  C)
  Plastocyanin system done clear
  D)
  Flavoproteins only done clear
  View Solution play_arrow

• question_answer38)
  Which of the following pigment is soluble in water [MP PMT 1989; CPMT 1983, 94]
  A)
  Chlorophyll done clear
  B)
  Carotene done clear
  C)
  Anthocyanin done clear
  D)
  Xanthophyll done clear
  View Solution play_arrow

• question_answer39)
  Where does the primary photochemical reaction occur in chloroplast or Where does the light reactions of photosynthesis take place or Light reaction takes place in [RPMT 1985,95, 99; CPMT 1984,95,98;  MP PMT 1988, 99; Pb. PMT 1999,2000]
  A)
  Stroma done clear
  B)
  Edoplasmic reticulum done clear
  C)
  Quantasome or thylakoids (Grana) done clear
  D)
  Inner membrane of chloroplast done clear
  View Solution play_arrow

• question_answer40)
  The trapping centre of light energy in photosystem-I is [BHU 1983, 2000; JIPMER 1988; BVP 2003]
  A)
  P-660 done clear
  B)
  P-680 done clear
  C)
  P-700 done clear
  D)
  P-720 done clear
  View Solution play_arrow

• question_answer41)
  Blue-green algae shows
  A)
  Chlorophyll 'a' done clear
  B)
  Chlorophyll 'b' done clear
  C)
  Both [a] and [b] done clear
  D)
  None of the above done clear
  View Solution play_arrow

• question_answer42)
  Pigment system-I conducts [JIPMER 1986, 90; AMU 1987]
  A)
  Cyclic photophosphorylation done clear
  B)
  Non-cyclic photophosphorylation done clear
  C)
  Both [a] and [b] done clear
  D)
  None of the above done clear
  View Solution play_arrow

• question_answer43)
  Pigment system-II is concerned with [BHU 1981,92, 2003; MHCET 2000]
  A)
  Photolysis of water done clear
  B)
  Reduction of\[C{{O}_{2}}\] done clear
  C)
  Flowering done clear
  D)
  None of the above done clear
  View Solution play_arrow

• question_answer44)
  The role of chlorophyll in photosynthesis is [NCERT 1977; CBSE PMT 2002]
  A)
  Absorption of\[C{{O}_{2}}\] done clear
  B)
  Absorption of light done clear
  C)
  Absorption of light and photochemical decomposition of water done clear
  D)
  Absorption of water done clear
  View Solution play_arrow

• question_answer45)
  Photophosphorylation is a process in which  [NCERT 1984; CPMT 1980, 84; MP PMT 1989, 96]
  A)
  Light energy is converted into chemical energy in the form of ATP done clear
  B)
  NADP is formed done clear
  C)
  Chemical energy is used to produce ATP done clear
  D)
  \[C{{O}_{2}}\]is reduced to carbohydrate done clear
  View Solution play_arrow

• question_answer46)
  Light is necessary during photosynthesis for [NCERT 1978]
  A)
  Evolution of hydrogen done clear
  B)
  Photolysis of water done clear
  C)
  Heating done clear
  D)
  Opening of stomata done clear
  View Solution play_arrow

• question_answer47)
  Chlorophyll is present [CPMT 1987]
  A)
  On the surface of chloroplast done clear
  B)
  In the stroma of chloroplast done clear
  C)
  In the grana of chloroplast done clear
  D)
  Dispersed throughout the chloroplast done clear
  View Solution play_arrow

• question_answer48)
  Through which of the following substances the photosystem-I passes an electron to NADP during light reactions [AMU 1987; Bihar MDAT 1991]
  A)
  Plastocyanin done clear
  B)
  Plastoquinone done clear
  C)
  Cytochrome done clear
  D)
  Ferredoxin done clear
  View Solution play_arrow

• question_answer49)
  During photochemical reactions of photosynthesis  [CPMT 1986]
  A)
  Liberation of oxygen takes place done clear
  B)
  Formation of ATP and\[NADP{{H}_{2}}\]take place done clear
  C)
  Liberation of\[{{O}_{2}}\]and formation of ATP and\[NADP{{H}_{2}}\]take place done clear
  D)
  Assimilation of\[C{{O}_{2}}\]takes place done clear
  View Solution play_arrow

• question_answer50)
  The core metal of chlorophyll is [CBSE PMT 1997,99; AFMC 1999; CPMT 2005]
  A)
  Fe done clear
  B)
  Mg done clear
  C)
  Ni done clear
  D)
  Cu done clear
  View Solution play_arrow

• question_answer51)
  Hill's reaction takes place in [CPMT 1986]
  A)
  Dark done clear
  B)
  Light done clear
  C)
  Dark and light both done clear
  D)
  At any time done clear
  View Solution play_arrow

• question_answer52)
  Anthocyanin generally occurs in the nature in the form of
  A)
  Chlorides done clear
  B)
  Phosphates done clear
  C)
  Both [a] and [b] done clear
  D)
  None of the above done clear
  View Solution play_arrow

• question_answer53)
  The approximate dimension of chlorophyll porphyrin ring is
  A)
  \[\text{1}\overset{\text{o}}{\mathop{\text{A}}}\,\]square done clear
  B)
  \[\text{5}\overset{\text{o}}{\mathop{\text{A}}}\,\]square done clear
  C)
  \[\text{10}\overset{\text{o}}{\mathop{\text{A}}}\,\]square done clear
  D)
  \[\text{15}\overset{\text{o}}{\mathop{\text{A}}}\,\]square done clear
  View Solution play_arrow

• question_answer54)
  Chlorophyll a molecule lost 1 electron from its outer orbit and gain
  A)
  Negative charge done clear
  B)
  Becomes neutral done clear
  C)
  Positive charge done clear
  D)
  None of the above done clear
  View Solution play_arrow

• question_answer55)
  The life of all excited chlorophyll molecules is
  A)
  Less than 0.01 second done clear
  B)
  More than 0.01 second done clear
  C)
  10 seconds done clear
  D)
  1 second done clear
  View Solution play_arrow

• question_answer56)
  Chlorophyll is [MP PMT 1996; BVP 2002]
  A)
  Soluble in organic solvents done clear
  B)
  Soluble in water done clear
  C)
  Soluble in both organic solvents and water done clear
  D)
  None of the above done clear
  View Solution play_arrow

• question_answer57)
  The role of phycobilins in photosynthesis is to
  A)
  Absorb and transfer energy to chlorophyll done clear
  B)
  Donate electrons to the electron transport system done clear
  C)
  Fix carbon dioxide done clear
  D)
  Carry hydrogen or electrons done clear
  View Solution play_arrow

• question_answer58)
  The main difference between the molecules of chlorophyll a and b is
  A)
  Chlorophyll a has an aldehyde group while chlorophyll b has a methyl group done clear
  B)
  Chlorophyll a has a methyl group while chlorophyll b has an aldehyde group done clear
  C)
  The phytol tail is absent in chlorophyll a and is present in chlorophyll b done clear
  D)
  The porphyrin group in chlorophyll b has no binding site but a binding site is present in chlorophyll a done clear
  View Solution play_arrow

• question_answer59)
  Which element is left when chlorophyll is burnt [CPMT 1993]
  A)
  Iron done clear
  B)
  Manganese done clear
  C)
  Magnesium done clear
  D)
  Molybdenum done clear
  View Solution play_arrow

• question_answer60)
  Chloroplasts absorb light of wavelength [CPMT 1994]
  A)
  \[200-300m\mu \] done clear
  B)
  \[800-1000m\mu \] done clear
  C)
  \[460-660m\mu \] done clear
  D)
  \[300-400m\mu \] done clear
  View Solution play_arrow

• question_answer61)
  The reaction centre for PS-I and PS- II are [MP PMT 2003]
  A)
  \[{{P}_{700}}\]and\[{{P}_{680}}\]respectively done clear
  B)
  \[{{P}_{680}}\]and\[{{P}_{700}}\]respectively done clear
  C)
  \[{{P}_{580}}\]and\[{{P}_{700}}\]respectively done clear
  D)
  \[{{P}_{700}}\]and\[{{P}_{580}}\]respectively done clear
  View Solution play_arrow

• question_answer62)
  Results of light reaction is/are [MDAT Bihar 1995; KCET 1994]
  A)
  Only ATP done clear
  B)
  Only\[NADP{{H}_{2}}\] done clear
  C)
  ATP and\[NADP{{H}_{2}}\] done clear
  D)
  Only FAD done clear
  E)
  None of these done clear
  View Solution play_arrow

• question_answer63)
  Photosystem-I contains [BHU 1983; RPMT 1987, 92]
  A)
   Chl a, Chl b, carotenoid and\[{{P}_{680}}\] done clear
  B)
  Chl a, Chl b and\[{{P}_{690}}\] done clear
  C)
  Chl a, Chl b and\[{{P}_{700}}\] done clear
  D)
  Chl a, xanthophyll and\[{{P}_{700}}\] done clear
  View Solution play_arrow

• question_answer64)
  True for each quantasome is that
  A)
  Chl b > Chl > carotene > quinones done clear
  B)
  Carotene > Chl b > Chl a > quinones done clear
  C)
  Chl a > Chl b > carotenoid > quinones done clear
  D)
  Quinones > Chl a > carotenoid > Chl b done clear
  View Solution play_arrow

• question_answer65)
  The separation of water into hydrogen and oxygen during photosynthesis is aided by
  A)
  Nitrogen and phosphorus compounds done clear
  B)
  Mn and chloride ions done clear
  C)
  Fe and high turgor pressure done clear
  D)
  Cu and Mo atoms done clear
  View Solution play_arrow

• question_answer66)
  Fluorescent chlorophyll 'a' occurs in
  A)
  PS-I done clear
  B)
  PS-II done clear
  C)
  [a] and [b] both done clear
  D)
  Stroma done clear
  View Solution play_arrow

• question_answer67)
  Absorption of light by chlorophyll of PS - II causes
  A)
  Reduction of\[C{{O}_{2}}\] done clear
  B)
  Photolysis of H2O done clear
  C)
  Flowering done clear
  D)
  Glucose formation done clear
  View Solution play_arrow

• question_answer68)
  An isolated chloroplast upon illumination converts ferric into ferrous and produces \[{{O}_{2}}\]. What happens if it is washed in running water prior to illumination
  A)
  Only \[{{O}_{2}}\] is produced done clear
  B)
  Only ferric is converted into ferrous done clear
  C)
  Both the above happens done clear
  D)
  Neither\[{{O}_{2}}\]is produced nor ferric is reduced done clear
  View Solution play_arrow

• question_answer69)
  Continued evolution of\[{{O}_{2}}\]in suspension of an isolated chloroplast in light in the presence of ferric salt, viologen dyes etc. is called 
  A)
  Emmerson's reaction done clear
  B)
  Hill's reaction done clear
  C)
  Blackman's reaction done clear
  D)
  Oxygenation done clear
  View Solution play_arrow

• question_answer70)
  Which photochemical reaction generates strong oxidant and weak reductant
  A)
  LR-I done clear
  B)
  LR-II done clear
  C)
  Cyclic photophosphorylation done clear
  D)
  Non-cyclic photophosphorylation done clear
  View Solution play_arrow

• question_answer71)
  The two light reactions when absorb light drive the flow of electrons against an electrochemical gradient from
  A)
  - 1.1 volt  to + 0.8 volt done clear
  B)
  + 0.8 volt  to - 0.3 volt done clear
  C)
  + 2.0 volt to + 5.2 volt done clear
  D)
  - 0.5 volt to + 25 volt done clear
  View Solution play_arrow

• question_answer72)
  The energy of a ?mole? of light quanta is 72 kcal in blue region at 400 nm and 41 kcal in red region at 700 nm. How much light energy would be required under standard conditions to make 1 mole of glucose costing 686 kcal
  A)
  1986 kcal done clear
  B)
  1968 to 3456 kcal done clear
  C)
  2620 to 3456 kcal done clear
  D)
  1980 kcal done clear
  View Solution play_arrow

• question_answer73)
  Which of the following does not participate when the light reaction synthesizes only ATP or performs the cyclic flow of electrons [AIIMS 1981]
  A)
  PS-I done clear
  B)
  PS-II done clear
  C)
  Ferredoxin done clear
  D)
  Plastocyanin done clear
  View Solution play_arrow

• question_answer74)
  The first electron carrier molecule from\[{{P}_{700}}\]to\[NAD{{P}^{+}}\]is believed to be
  A)
  Cytochrome done clear
  B)
  Cu protein/plastocyanin done clear
  C)
  FeS protein/ferredoxin done clear
  D)
  FeMg protein done clear
  View Solution play_arrow

• question_answer75)
  How much energy in terms of ATP equivalents is consumed in the photosynthetic production of a mole of hexose
  A)
  36 ATP eq. done clear
  B)
  38 ATP eq. done clear
  C)
  40 ATP eq. done clear
  D)
  54 ATP eq. done clear
  View Solution play_arrow

• question_answer76)
  Chlorophyll converts
  A)
  Light energy into chemical done clear
  B)
  Chemical energy into light done clear
  C)
  Light energy into electrical done clear
  D)
  Electrical energy into food done clear
  View Solution play_arrow

• question_answer77)
  In higher plants, the photosynthetic pigments are
  A)
  Chl a + Chl b + anthocyanins done clear
  B)
  Chl a + carotenoid done clear
  C)
  Chl a + Chl b + carotenoid done clear
  D)
  Chl b  + carotenoid + phycobilins done clear
  View Solution play_arrow

• question_answer78)
  Why the rate of photosynthesis declines at very strong light intensities. It may be due to
  A)
  Increased respiration done clear
  B)
  Decreased hydration done clear
  C)
  Photo-oxidation of chlorophyll done clear
  D)
  All the above done clear
  View Solution play_arrow

• question_answer79)
  Chlorophyll 'a' and 'b' shows maximum absorption in
  A)
  Blue region done clear
  B)
  Red region done clear
  C)
  Blue and red regions done clear
  D)
  Yellow and violet regions done clear
  View Solution play_arrow

• question_answer80)
  What are the two peaks of light absorption of Chlorophyll 'a'. The two peaks are near
  A)
  400 and 500 nm done clear
  B)
  430 and 730 nm done clear
  C)
  430 and 660 nm done clear
  D)
  400 and 660 nm done clear
  View Solution play_arrow

• question_answer81)
  How chlorophyll would appear when seen in red light
  A)
  Red done clear
  B)
  Green done clear
  C)
  Black done clear
  D)
  Colourless done clear
  View Solution play_arrow

• question_answer82)
  What is a quantasome
  A)
  Particle of photosynthetic pigments done clear
  B)
  A macro-molecule done clear
  C)
  An enzyme done clear
  D)
  A cofactor of\[C{{O}_{2}}\]assimilation done clear
  View Solution play_arrow

• question_answer83)
  Who revealed the chemical composition of chlorophyll carotene and xanthophyll
  A)
  Govindjee done clear
  B)
  Willstatter and Stoll done clear
  C)
  Park and Biggins done clear
  D)
  Meyers and French done clear
  View Solution play_arrow

• question_answer84)
  Which one is\[C{{u}^{++}}\]containing pigment [CPMT 1999, 2003; MP PMT 2003]
  A)
  Ferredoxin done clear
  B)
  Plastocyanin done clear
  C)
  Plastoquinone done clear
  D)
  Cytochrome done clear
  View Solution play_arrow

• question_answer85)
  The chlorophylls absorb visible light in the region of following wavelengths [BHU 1994]
  A)
  400 nm to 500 nm only done clear
  B)
  600 nm to 800 nm only done clear
  C)
  400 nm to 500 nm and 600 nm to 700 nm done clear
  D)
  300 nm to 400 nm only done clear
  View Solution play_arrow

• question_answer86)
  In photosynthesis the energy formed is transferred in the form of [Bihar MDAT 1995]
  A)
  ADP done clear
  B)
  AMP + ADP done clear
  C)
  \[NADP{{H}^{2}}+ATP\] done clear
  D)
  ATP done clear
  View Solution play_arrow

• question_answer87)
  Photolysis of water takes place in [CPMT 1995]
  A)
  Calvin cycle done clear
  B)
  Glycolysis done clear
  C)
  Light phase done clear
  D)
  Dark phase done clear
  View Solution play_arrow

• question_answer88)
  In which stage of photosynthesis, light is directly necessary [CPMT 1996]
  A)
  For electron exitation done clear
  B)
  For reduction of\[C{{O}_{2}}\] done clear
  C)
  For regulating photosystem done clear
  D)
  For cyclic photophosphorylation done clear
  View Solution play_arrow

• question_answer89)
  Hill's law in photosynthesis shows [CPMT 1996]
  A)
  Electron exitation done clear
  B)
  Removal of water done clear
  C)
  Fixation of\[C{{O}_{2}}\] done clear
  D)
  \[{{O}_{2}}\]is obtained from water done clear
  View Solution play_arrow

• question_answer90)
  The ?Z? scheme of photosynthesis was proposed by
  A)
  Hill and Bendall done clear
  B)
  Emerson done clear
  C)
  Arnon done clear
  D)
  Rabinowitch and Govindjee done clear
  View Solution play_arrow

• question_answer91)
  Splitting of water in photosynthesis is called [RPMT 1985; MHCET 2001; Pb. PMT 2000,2004]
  A)
  Dark reaction done clear
  B)
  Electron transfer done clear
  C)
  Photolysis done clear
  D)
  Phototropism done clear
  View Solution play_arrow

• question_answer92)
  Phtosynthetic unit is [MP PMT 2003]
  A)
  Glyoxysome done clear
  B)
  Spherosome done clear
  C)
  Microsome done clear
  D)
  Quantasome done clear
  View Solution play_arrow

• question_answer93)
  The wavelength of light most absorbed during photosynthesis is [MP PMT 1998]
  A)
  440 nm done clear
  B)
  550 nm done clear
  C)
  660 nm done clear
  D)
  700 nm done clear
  View Solution play_arrow

• question_answer94)
  Which one of the following elements is required for photosynthetic oxygen evolution [MP PMT 1998]
  A)
  Copper done clear
  B)
  Iron done clear
  C)
  Manganese done clear
  D)
  Zinc done clear
  View Solution play_arrow

• question_answer95)
  Which pigment is present universally in all green plants [MP PMT 1999]
  A)
  Chlorophyll-a done clear
  B)
  Chlorophyll-b done clear
  C)
  Chlorophyll-c done clear
  D)
  Chlorophyll-m done clear
  View Solution play_arrow

• question_answer96)
  Main pigment involved in transfer of electrons in photosynthesis is [CPMT 1998]
  A)
  Cytochrome done clear
  B)
  Phytochrome done clear
  C)
  Both [a] and [b] done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer97)
  In photosynthesis light energy is utilized in  [CPMT 1998; MHCET 2003]
  A)
  Converting ATP into ADP done clear
  B)
  Changing\[C{{O}_{2}}\]into carbohydrate done clear
  C)
  Converting ADP into ATP done clear
  D)
  All of the above done clear
  View Solution play_arrow

• question_answer98)
  Which one of the following statements about cytochrome\[{{P}_{450}}\]is wrong [CBSE PMT 1998]
  A)
  It has an important role in metabolism done clear
  B)
  It contains iron done clear
  C)
  It is a coloured cell done clear
  D)
  It is an enzyme involved in oxidation reactions done clear
  View Solution play_arrow

• question_answer99)
  \[{{P}_{700}}\]is a special form of which pigment [RPMT 1997]
  A)
  Chlorophyll b done clear
  B)
  Carotenes done clear
  C)
  Chlorophyll a done clear
  D)
  Phycobilins done clear
  View Solution play_arrow

• question_answer100)
  In light reaction which is formed [RPMT 1999]
  A)
  ATP done clear
  B)
  NADPH done clear
  C)
  \[{{O}_{2}}\] done clear
  D)
  All of these done clear
  View Solution play_arrow

• question_answer101)
  Which one of the following concerns photophosphorylation [CBSE PMT 1999]
  A)
  \[\text{AMP}+\text{Inorganic}\,P{{O}_{\text{4}}}\xrightarrow{\text{Light}\,\text{energy}}\text{ATP}\] done clear
  B)
  \[\text{ADP}+\text{AMP}\xrightarrow{\text{Light}\,\,\text{energy}}\text{ATP}\] done clear
  C)
  \[\text{ADP}+\text{Inorganic}\,\,P{{O}_{4}}\xrightarrow{\text{Light}\,\text{energy}}\text{ATP}\] done clear
  D)
  \[\text{ADP}+\text{Inorganic}\,\,P{{O}_{\text{4}}}\to \text{ATP}\] done clear
  View Solution play_arrow

• question_answer102)
  Which fractions of the visible spectrum of solar radiations are primarily absorbed by carotenoids of the higher plants  [CBSE PMT 1999]
  A)
  Violet and blue done clear
  B)
  Blue and green done clear
  C)
  Green and red done clear
  D)
  Red and violet done clear
  View Solution play_arrow

• question_answer103)
  Photosystem I and Photosystem II are found in  [MP PMT 2001]
  A)
  Stroma of chloroplast done clear
  B)
  Grana of chloroplast done clear
  C)
  Matrix of mitochondria done clear
  D)
  Inner membrane of mitochondria done clear
  View Solution play_arrow

• question_answer104)
  Number of chlorophyll arranged per reaction centre in the light harvesting complex are [Orissa JEE 2005]
  A)
  100 done clear
  B)
  200 done clear
  C)
  300 done clear
  D)
  400 done clear
  View Solution play_arrow

• question_answer105)
  The light absorbed by the chlorophyll is at the  wave length of [MP PMT 2002]
  A)
  400 nm done clear
  B)
  500 nm done clear
  C)
  600 nm done clear
  D)
  660 nm done clear
  View Solution play_arrow

• question_answer106)
  Phytol chain is present in [Wardha 2005]
  A)
  Carotenoids done clear
  B)
  Haemoglobin done clear
  C)
  Chlorophyll done clear
  D)
  Phycocyanin done clear
  View Solution play_arrow

• question_answer107)
  \[{{O}_{2}}\]evolution is directly associated with  [DPMT 2003; BVP 2004]
  A)
  PS I done clear
  B)
  PS II done clear
  C)
  Phytochrome done clear
  D)
  Phycocyanin done clear
  View Solution play_arrow

• question_answer108)
  ATP formation in photosynthesis is known as [DPMT 1977; CPMT 1986, 98; NCERT 1986; MP PMT 1993]
  A)
  Phosphorylation done clear
  B)
  Photophosphorylation done clear
  C)
  Oxidative phosphorylation done clear
  D)
  None of the above done clear
  View Solution play_arrow

• question_answer109)
  Hill reaction occurs in [AIIMS 2003]
  A)
  High altitude plants done clear
  B)
  Total darkness done clear
  C)
  Absence of water done clear
  D)
  Presence of ferredoxin done clear
  View Solution play_arrow

• question_answer110)
  Plants adapted to low light intensity have [CBSE PMT 2004]
  A)
  More extended root system done clear
  B)
  Leaves modified to spines done clear
  C)
  Larger photosynthetic unit size than the sun plants done clear
  D)
  Higher rate of\[C{{O}_{2}}\]fixation than the sun plants done clear
  View Solution play_arrow

• question_answer111)
  Photosynthetically active radiation (PAR) represents the following range of wavelength [CBSE PMT 1996, 2005]
  A)
  340-450 mm done clear
  B)
  400-700 mm done clear
  C)
  500-600 mm done clear
  D)
  450-950 mm done clear
  View Solution play_arrow

• question_answer112)
  Photolysis of water by isolated chloroplasts was demonstrated by [AIEEE 2004]
  A)
  Robin Hill done clear
  B)
  Van Niel done clear
  C)
  Liebig done clear
  D)
  Calvin done clear
  View Solution play_arrow

• question_answer113)
  Non-cyclic photophosphorylation involves [MHCET 2002]
  A)
  PS-I or PS-II done clear
  B)
  PS-I only done clear
  C)
  PS-II only done clear
  D)
  Stroma matrix done clear
  View Solution play_arrow

• question_answer114)
  The reaction centre is located in [MHCET 2002]
  A)
  Chlorophyll 'b' done clear
  B)
  Carotene done clear
  C)
  Xanthophyll done clear
  D)
  Chlorophyll 'a' done clear
  View Solution play_arrow

• question_answer115)
  Cyclic photophosphorylation produces [MHCET 2004]
  A)
  \[\text{NADPH}\] done clear
  B)
  \[\text{ATP}+\text{NADPH}\] done clear
  C)
  \[\text{ATP}\] done clear
  D)
  \[\text{ATP}+\text{NADPH}+{{\text{O}}_{\text{2}}}\] done clear
  View Solution play_arrow

• question_answer116)
  In noncyclic photophosphorylation, the pigment molecule first excited is [MHCET 2004]
  A)
  \[{{P}_{680}}\] done clear
  B)
  \[{{P}_{700}}\] done clear
  C)
  Chlorophyll-b done clear
  D)
  Xanthophyll done clear
  View Solution play_arrow

• question_answer117)
  The value of\[{{Q}_{10}}\]for photosynthesis is
  A)
  4 done clear
  B)
  6 done clear
  C)
  7 done clear
  D)
  2 done clear
  View Solution play_arrow

• question_answer118)
  ATP is produced during [MP PMT 2005]
  A)
  Cyclic photosphosphorylation done clear
  B)
  None cyclic photosphosphorylation done clear
  C)
  Both done clear
  D)
  None done clear
  View Solution play_arrow

• question_answer119)
  In non-cyclic photophosphorylation, there are [Manipal 2005]
  A)
  \[24{{H}^{+}}\] done clear
  B)
  \[36{{H}^{+}}\] done clear
  C)
  \[12{{H}^{+}}\] done clear
  D)
  \[32{{H}^{+}}\] done clear
  View Solution play_arrow

• question_answer120)
   The light energy passes in the form of
  A)
  Photo ions done clear
  B)
  Photons done clear
  C)
  Photosomes done clear
  D)
  All the above done clear
  View Solution play_arrow

• question_answer121)
  Photophosphorylation differs from oxidative phosphorylation in
  A)
  It takes place in light done clear
  B)
  ATP is formed done clear
  C)
  Cytochrome participates done clear
  D)
  All the above done clear
  View Solution play_arrow

• question_answer122)
  Which of the following occurs first in the light reaction
  A)
  Oxidation of chlorophyll done clear
  B)
  Photolysis of water done clear
  C)
  Evolution of\[ATP\]and\[{{O}_{2}}\] done clear
  D)
  Production of\[{{O}_{2}}\]and\[NADP{{H}_{2}}\] done clear
  View Solution play_arrow

• question_answer123)
  The radiation energy of light is converted to chemical energy and stored as [Orissa JEE 2005]
  A)
  AMP done clear
  B)
  ADP done clear
  C)
  ATP done clear
  D)
  APP done clear
  View Solution play_arrow

• question_answer124)
  Photosynthesis of light reaction occur in [AMU 2005]
  A)
  Only absence of light done clear
  B)
  Only present of light done clear
  C)
  Presence and absence of light done clear
  D)
  Absent of light in maximum intensity done clear
  View Solution play_arrow

• question_answer125)
  Which of the following method is responsible for ATP production by green plants cells in the presence of sunlight [AMU 2005]
  A)
  By phosphorylation only done clear
  B)
  By oxidative phosphorylation only done clear
  C)
  By only substrate level phosphorylation done clear
  D)
  All of these done clear
  View Solution play_arrow