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MCQs

Total Questions : 72 | Page 6 of 8 pages
Question 51. Which enzyme plays the role of a catalyst in CO₂ fixation in C4 plants?
  1.    Carbonic mutase
  2.    Carbonic reductase
  3.    Carbonic anhydrase
  4.    Carbonic dehydrogenase
 Discuss Question
Answer: Option C. -> Carbonic anhydrase
Answer: (c).Carbonic anhydrase
Question 52. C4 pathway uses 5 ATP molecules and 4 NADPH molecules as the energy source.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 53. Which of the following plants undergo CAM photosynthesis?
  1.    Cactus
  2.    Sugarcane
  3.    Corn
  4.    Wheat
 Discuss Question
Answer: Option A. -> Cactus
Answer: (a).Cactus
Question 54. The CAM pathway starts at daytime.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 55. What is the chemical formula for oxaloacetic acid?
  1.    C₄H₃O₅
  2.    C₄H₄O₅
  3.    C₄H₄O₆
  4.    C₃H₄O₅
 Discuss Question
Answer: Option B. -> C₄H₄O₅
Answer: (b).C₄H₄O₅
Question 56. Which of the following is a facultative CAM plant?
  1.    Century plant
  2.    Corn
  3.    Maize
  4.    Common ice plant
 Discuss Question
Answer: Option D. -> Common ice plant
Answer: (d).Common ice plant
Question 57. How many molecules of ATP and NADPH₂ are used in synthesis of one glucose molecule?
  1.    30 ATP and 10 NADPH₂
  2.    10 ATP and 30 NADPH₂
  3.    30 ATP and 12 NADPH₂
  4.    12 ATP and 30 NADPH₂
 Discuss Question
Answer: Option C. -> 30 ATP and 12 NADPH₂
Answer: (c).30 ATP and 12 NADPH₂
Question 58. Pigments absorb light of particular wavelengths.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 59. Carotenoids dissipate absorbed energy as heat.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 60. What are carotenoids?
  1.    pigments
  2.    cell organelles
  3.    terrestrial plants
  4.    granulated thylakoids
 Discuss Question
Answer: Option A. -> pigments
Answer: (a).pigments

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