Photosynthesis Set 4

All India Pre Medical Test (AIPMT)

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This set of Biology Multiple Choice Questions & Answers (MCQs) focuses on Photosynthesis Set 4

Q1 | In young leaves ratio of carotene to Xanthophyll is ____.
  • 2:01
  • 3:01
  • 1:03
  • 1:02
Answer: 1:02
Q2 | Which of the following pigments contains open pyrolle ring?
  • Phycobilin
  • Xanthophylls
  • Chlorophylls
  • ?-carotene
Answer: Phycobilin
Q3 | In which of the following light, rate of photosynthesis is maximum?
  • white
  • discontinuous white
  • red
  • blue
Answer: discontinuous white
Q4 | Quantum yield of photosynthesis is ______.
  • 13.50%
  • 8%
  • 13%
  • 12.50%
Answer: 12.50%
Q5 | During light phase of photosynthesis ______ is oxidized and ______ is reduced.
  • CO2 and Water
  • Water and CO2
  • Water and NADP
  • NADPH2 and CO2
Answer: Water and NADP
Q6 | During dark phase of photosynthesis ______ is oxidized and ______ is reduced
  • CO2 and Water
  • Water and CO2
  • Water and NADP
  • NADPH2 and CO2
Answer: NADPH2 and CO2
Q7 | The visible product of photosynthesis is ______.
  • glucose
  • cellulose
  • starch
  • fructose
Answer: starch
Q8 | To produce 3 glucose molecules ______ ATP and ______ NADPH2 molecules are required.
  • 54, 36
  • 54, 30
  • 36, 60
  • 18, 12
Answer: 54, 36
Q9 | Glycolytic reversal is a part of ______.
  • aerobic respiration
  • anaerobic respiration
  • light phase of photosynthesis
  • dark phase of photosynthesis
Answer: dark phase of photosynthesis
Q10 | RuBp carboxylase acts as RuBp carboxygenase at ______ CO2 conc. And ______ O2 conc.
  • low, low
  • low, hig
  • high, high
  • high, low
Answer: low, hig
Q11 | The source of CO2 during calvin cycle in C4 plant is
  • Malic acid
  • OAA
  • PEP
  • RuBP
Answer: Malic acid
Q12 | Dicot which follow C4 pathway is____.
  • wheat
  • Amranthus
  • Maize
  • Mango
Answer: Amranthus
Q13 | Absorption spectrum of chlorophyll is maximum in _____ light.
  • red
  • blue
  • yellow
  • blue-violet
Answer: blue
Q14 | The oxygen molecule in glucose formed during photosynthesis comes from
  • Water
  • Organic acids
  • CO2
  • atmosphere
Answer: CO2
Q15 | Dimorphic chloroplast are present in ______.
  • zea may
  • sacchrum officinale
  • sorghum bicolor
  • all of these
Answer: all of these
Q16 | Red pigment in tomato is
  • ? -carotene
  • Anthocyanin
  • Lycopene
  • Lutein
Answer: Lycopene
Q17 | Solarisation refers to ______.
  • formation of sugar with help of water and energy
  • destruction of chlorophyll
  • synthesis of chl.
  • both b and c
Answer: destruction of chlorophyll
Q18 | Dark reaction requires light reaction for
  • carboxylation of RUBP
  • regeneration of RuBP
  • reduction of PGA
  • formation of hexose sugar
Answer: reduction of PGA
Q19 | Emerson effect proves
  • concept of two photosystem in plant
  • photophosphorylation
  • photorespiration
  • there are light and dark reaction in photosynthesis
Answer: concept of two photosystem in plant
Q20 | Name a plant which do not perform photosynthesis is
  • Algae
  • Bryophyllum
  • cuscutta
  • Pitcher plant
Answer: Pitcher plant
Q21 | Light reaction of photosynthesis results in formation of ______.
  • O2
  • NADPH + H+
  • ATP
  • All of these
Answer: All of these
Q22 | C55H70O6N4 Mg is
  • An accessory pigment in photosynthesi
  • Present in PS-II
  • Present in all green plants
  • All of these
Answer: All of these
Q23 | The ionized chl.a+
  • Receives low energy electron
  • Receives high energy electron
  • Expels low energy electron
  • Expels high energy electron
Answer: Receives low energy electron
Q24 | In Calvin cycle,
  • fructose 1,6 diphophate undergoes dephosphorylation.
  • ATP is formed during dephosphoylation of fructose
  • 1,3 di PGA undergo phosphorylation
  • none of these
Answer: fructose 1,6 diphophate undergoes dephosphorylation.
Q25 | What will happen to the rate of photosynthesis if sodium bicarbonate is added in the water having hydrilla plant in a beaker
  • It will remain normal
  • It will be decreased
  • It will be stopped
  • It will be accelerated
Answer: It will be accelerated
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