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MCQs

Total Questions : 107 | Page 11 of 11 pages
Question 101. . Which of the following is not a characteristic of a transgenic crop?
  1.    herbicide resistance
  2.    Bt insect resistance toxin
  3.    increased methionine content
  4.    none of these
 Discuss Question
Answer: Option D. -> none of these
Question 102. . Reducing the expression of pectin methylesterase (PME) has resulted in
  1.    plants with resistance to bacteria and fungi
  2.    tomato juice that has higher viscosity
  3.    tomato fruit that last longer before they become rotten
  4.    tomato fruit that will not ripen
 Discuss Question
Answer: Option B. -> tomato juice that has higher viscosity
Question 103. . Resistance to sulphonyl urea compounds in transgenic tobacco plant has been developed by the transfer of
  1.    gene for EPSPS (5-enol-pyruvyl shikimat 3 phosphate synthase)
  2.    gene for ALS (acetolactate synthase)
  3.    gene for GS (glutamine synthase)
  4.    any of the above
 Discuss Question
Answer: Option B. -> gene for ALS (acetolactate synthase)
Question 104. . In transgenic plants that have been manipulated to express patho-genesis-related (PR) proteins all the time it has been shown that
  1.    these provide no protection at all against pathogens
  2.    expression of one PR protein provides high levels of protection against many pathogens
  3.    expression of two PR proteins provides some protection against a few pathogens
  4.    these proteins trigger the production of other antimicrobial defenses
 Discuss Question
Answer: Option D. -> these proteins trigger the production of other antimicrobial defenses
Question 105. . Reducing the expression of pectin methylesterase (PME) has resulted in
  1.    plants with resistance to bacteria and fungi
  2.    tomato juice that has higher viscosity
  3.    tomato fruit that last longer before they become rotten
  4.    tomato fruit that will not ripen
 Discuss Question
Answer: Option B. -> tomato juice that has higher viscosity
Question 106. . In transgenic plants that have been manipulated to express patho-genesis-related (PR) proteins all the time it has been shown that
  1.    these provide no protection at all against pathogens
  2.    expression of one PR protein provides high levels of protection against many pathogens
  3.    expression of two PR proteins provides some protection against a few pathogens
  4.    these proteins trigger the production of other antimicrobial defenses
 Discuss Question
Answer: Option D. -> these proteins trigger the production of other antimicrobial defenses
Question 107. . Resistance to sulphonyl urea compounds in transgenic tobacco plant has been developed by the transfer of
  1.    gene for EPSPS (5-enol-pyruvyl shikimat 3 phosphate synthase)
  2.    gene for ALS (acetolactate synthase)
  3.    gene for GS (glutamine synthase)
  4.    any of the above
 Discuss Question
Answer: Option B. -> gene for ALS (acetolactate synthase)

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