46. Which of the following gene detoxify herbicide bronoxynil?
A. Nitrilase
B. Glutathione S-transferase (GST)
C. Phosphinothricin acetyltransferase
D. All of these
47. For developing herbicide resistance in transgenic plants which of the following approach/(es) is/are used?
A. Target molecule is made insensitive to herbicide
B. Target protein is overproduced
C. A pathway should be introduced that detoxify the herbicide
D. All of the above
48. Which of the following is not a characteristic of a transgenic crop?
A. herbicide resistance
B. Bt insect resistance toxin
C. increased methionine content
D. none of these
49. Phosphinothricin acetyltransferase is encoded by
A. gene bxn in Klebsiella pneumoniae
B. bar gene in Streptomyces spp
C. both (a) and (b)
D. none of these
50. Reducing the expression of pectin methylesterase (PME) has resulted in
A. plants with resistance to bacteria and fungi
B. tomato juice that has higher viscosity
C. tomato fruit that last longer before they become rotten
D. tomato fruit that will not ripen