NEET Biology Photosynthesis in Higher Plants Question Bank

done Dark Reaction Total Questions - 34

• question_answer1)
  Dark reaction of photosynthesis is called
  A)
  Aphotic action done clear
  B)
  Black action done clear
  C)
  Blackman's reaction done clear
  D)
  None of the above done clear
  View Solution play_arrow

• question_answer2)
  In normal chloroplast, the percentage of chlorophyll is
  A)
  50% done clear
  B)
  75% done clear
  C)
  5-10% done clear
  D)
  95% done clear
  View Solution play_arrow

• question_answer3)
  Which of the enzyme is involved in the conversion of 3PGA to 3PGAL
  A)
  Triose phosphate dehydrogenase done clear
  B)
  Carboxydismutase done clear
  C)
  Phosphatase done clear
  D)
  Aldolase done clear
  View Solution play_arrow

• question_answer4)
  The number of carbon atoms is five in
  A)
  Xylulose done clear
  B)
  Ribose done clear
  C)
  Ribulose done clear
  D)
  All the above done clear
  View Solution play_arrow

• question_answer5)
  Sedohaptulose is a carbohydrate having
  A)
  3 carbon atoms done clear
  B)
  2 carbon atoms done clear
  C)
  4 carbon atoms done clear
  D)
  7 carbon atoms done clear
  View Solution play_arrow

• question_answer6)
  First stable product of Calvin cycle has
  A)
  2 carbon atoms done clear
  B)
  3 carbon atoms done clear
  C)
  4 carbon atoms done clear
  D)
  6 carbon atoms done clear
  View Solution play_arrow

• question_answer7)
  Phosphatase enzymes in\[{{C}_{3}}\]cycle participate in
  A)
  Addition of phosphate done clear
  B)
  Removal of phosphate done clear
  C)
  Both the above done clear
  D)
  The enzyme is not concerned with removal or addition of phosphate done clear
  View Solution play_arrow

• question_answer8)
  In dark reaction, first reaction is the
  A)
  Carboxylation done clear
  B)
  Decarboxylation done clear
  C)
  Dehydrogenation done clear
  D)
  Deamidation done clear
  View Solution play_arrow

• question_answer9)
  Which one of the following is the product of dark reaction of photosynthesis [Bihar MDAT 1991]
  A)
  \[C{{O}_{2}}\] done clear
  B)
  ATP done clear
  C)
  Pyruvic acid done clear
  D)
  Phosphoglyceraldehyde done clear
  View Solution play_arrow

• question_answer10)
  In\[{{C}_{4}}\]plants,\[C{{O}_{2}}\]combine with PEP in presence of [CPMT 1990]
  A)
  PEP carboxylase done clear
  B)
  RuBP carboxylase done clear
  C)
  RuBP oxygenase done clear
  D)
  Hydrogenase done clear
  View Solution play_arrow

• question_answer11)
  \[C{{O}_{2}}\]joins the photosynthetic pathway during [CBSE PMT 1988]
  A)
  Light reaction done clear
  B)
  Dark reaction done clear
  C)
  Photosystem-I done clear
  D)
  Photosystem-II done clear
  View Solution play_arrow

• question_answer12)
  Dark reaction of photosynthesis is called so because [CPMT 1976; RPMT 1985;AMU 1988;  JIPMER 1988; NCERT 1980]
  A)
  It can also occur in dark done clear
  B)
  It does not require light energy done clear
  C)
  Cannot occur during day time done clear
  D)
  It occurs more rapidly in night done clear
  View Solution play_arrow

• question_answer13)
  The initial enzyme of Calvin cycle is [BHU 1989, 90]
  A)
  Ribulose 1, 5 diphosphate carboxylase done clear
  B)
  Triose phosphate dehydrogenase done clear
  C)
  Phosphopentokinase done clear
  D)
  Cytochrome oxidase done clear
  View Solution play_arrow

• question_answer14)
  During photosynthesis when PGA is changed into phosphoglyceraldehyde, which of the following reaction occur [BHU 1980]
  A)
  Oxidation done clear
  B)
  Reduction done clear
  C)
  Electrolysis done clear
  D)
  Hydrolysis done clear
  View Solution play_arrow

• question_answer15)
  Ribulose diphosphate carboxylase enzyme catalyses the carboxylation reaction between [BHU 1979]
  A)
  Oxaloacetic acid and acetyl CoA done clear
  B)
  \[C{{O}_{2}}\]and ribulose 1, 5 diphosphate done clear
  C)
  Ribulose diphosphate and phosphoglyceraldehyde done clear
  D)
  PGA and dihydroxy acetone phosphate done clear
  View Solution play_arrow

• question_answer16)
  Calvin cycle occur in [BHU 1983; MP PMT 1996; BVP 2002]
  A)
  Chloroplasts done clear
  B)
  Cytoplasm done clear
  C)
  Mitochondria done clear
  D)
  Glyoxisomes done clear
  View Solution play_arrow

• question_answer17)
   During dark reaction of photosynthesis [CPMT 1985]
  A)
  Water split done clear
  B)
  \[C{{O}_{2}}\]is reduced to organic compounds done clear
  C)
  Chlorophyll is activated done clear
  D)
  6 carbon sugar is broken down into 3 carbon sugar done clear
  View Solution play_arrow

• question_answer18)
  Dark reaction of photosynthesis take place in [CPMT 1986, 90; RPMT 1995; MP PMT 2000]
  A)
  Grana done clear
  B)
  Stroma done clear
  C)
  Matrix done clear
  D)
  Cytoplasm done clear
  View Solution play_arrow

• question_answer19)
  In\[{{C}_{3}}\]plants, the first stable product of photosynthesis during dark reaction is [CPMT 1986, 90, 92; RPMT 1995; MP PMT 1987, 90, 2000; BHU 1995; CBSE PMT 1995; KCET 1998]
  A)
  3-phosphoglyceric acid done clear
  B)
  Phosphoglyceraldehyde done clear
  C)
  Maleic acid done clear
  D)
  Oxaloacetic acid done clear
  View Solution play_arrow

• question_answer20)
  For the reduction of one molecule of\[C{{O}_{2}}\]with water, the energy required is
  A)
  100 kcal done clear
  B)
  110 kcal done clear
  C)
  120 kcal done clear
  D)
  210 kcal done clear
  View Solution play_arrow

• question_answer21)
  Which part of the photosynthetic process does not require light and temperature dependent
  A)
  Hill's reaction done clear
  B)
  Blackman's reaction done clear
  C)
  Warburg's reaction done clear
  D)
  Emmerson's reaction done clear
  View Solution play_arrow

• question_answer22)
  Calvin cycle is [CPMT 1995]
  A)
  Dependent on light done clear
  B)
  Not dependent on light done clear
  C)
  Occurs in light done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer23)
  How many Calvin cycle form one hexose molecule [CBSE PMT 1996, 2000]
  A)
  2 done clear
  B)
  6 done clear
  C)
  4 done clear
  D)
  8 done clear
  View Solution play_arrow

• question_answer24)
  \[C{{O}_{2}}\]acceptor in\[{{C}_{3}}\]plants is [CBSE PMT 1995, 96,99; CPMT 1999, 2001; RPMT 2002]
  A)
  Xylulose-5-phosphate done clear
  B)
  3-phosphoglyceric acid done clear
  C)
  Ribulose 1, 5 diphosphate done clear
  D)
  Phosphoenol pyruvic acid done clear
  View Solution play_arrow

• question_answer25)
  Which of the following is present in Calvin cycle [CBSE PMT 1996]
  A)
  Photophosphorylation done clear
  B)
  Oxidative carboxylation done clear
  C)
  Reductive carboxylation done clear
  D)
  Oxidative phosphorylation done clear
  View Solution play_arrow

• question_answer26)
  Carbon dioxide is fixed in [MP PMT 1999]
  A)
  Light reaction done clear
  B)
  Dark reaction done clear
  C)
  Aerobic respiration done clear
  D)
  Anaerobic respiration done clear
  View Solution play_arrow

• question_answer27)
  In which plant Calvin experimented by radioactive isotopy to discover the stable product of\[{{C}_{3}}\]cycle [Orissa JEE 2005]
  A)
  Chlorella done clear
  B)
  Cycas done clear
  C)
  Carrot done clear
  D)
  Tobacco done clear
  View Solution play_arrow

• question_answer28)
  The first stable compound of dark reaction of photosynthesis is  [BVP 2000]
  A)
  Phosphoglyceraldehyde done clear
  B)
  Phosphoglyceric acid done clear
  C)
  Fractose done clear
  D)
  Starch done clear
  View Solution play_arrow

• question_answer29)
  The first step in dark reaction of photosynthesis is [CPMT 2004]
  A)
  Formation of ATP done clear
  B)
  Ionization of water done clear
  C)
  Attachment of \[C{{O}_{2}}\] to a pentose sugar done clear
  D)
  Excitement of electron of chlorophyll by a photon of light done clear
  View Solution play_arrow

• question_answer30)
  Mesophyll chloroplast of which plant alone is capable of synthesising starch or sucrose
  A)
  \[{{C}_{3}}\]plant done clear
  B)
  \[{{C}_{4}}\]plant done clear
  C)
  [a] and [b] both done clear
  D)
  Neither\[{{C}_{3}}\]or\[{{C}_{4}}\] done clear
  View Solution play_arrow

• question_answer31)
  Number of carboxylation occur in Calvin cycle, is [DPMT 2004]
  A)
  0 done clear
  B)
  1 done clear
  C)
  2 done clear
  D)
  3 done clear
  View Solution play_arrow

• question_answer32)
  Which of the following is required for conversion of 3PGAL and dihydroxy acetone phosphate to fructose 1, 6 diphosphate
  A)
  Transketolase done clear
  B)
  Aldolase done clear
  C)
  Phosphatase done clear
  D)
  Hexokinase done clear
  View Solution play_arrow

• question_answer33)
  Which of the following is the first compound that accepts carbon dioxide during dark phase of photosynthesis [BHU 2004]
  A)
  NADP done clear
  B)
  RuBP done clear
  C)
  Ferridoxin done clear
  D)
  Cytochrome done clear
  View Solution play_arrow

• question_answer34)
  Radioactive\[{{C}^{14}}\]is given to\[C{{O}_{2}}\]and released to atmosphere. This\[C{{O}_{2}}\]is taken by RuBP in a\[{{C}_{3}}\]plant. First radioactive\[{{C}^{14}}\]is seen in which compound [Manipal 2005]
  A)
  PGAL done clear
  B)
  PEP done clear
  C)
  RMP done clear
  D)
  PGA done clear
  View Solution play_arrow