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MCQs

Total Questions : 107 | Page 2 of 11 pages
Question 11. Plants derived sexually from the same plant are____ while those derived from somatic tissue from the same plant are____.
  1.    plants cannot be derived from somatic tissue
  2.    different, also different
  3.    identical, different
  4.    different, identical
 Discuss Question
Answer: Option D. -> different, identical
Question 12. Transgenic plants with increased tolerance to aluminum have been produced by making plants that
  1.    bind aluminum to the cell wall
  2.    secrete citrate into the soil
  3.    make more metal-binding peptides like phytochelatins
  4.    secrete phytosiderophores into the soil
 Discuss Question
Answer: Option B. -> secrete citrate into the soil
Question 13. Plants containing genes encoding cytokines and blood clotting factors are used in
  1.    vaccine production
  2.    pharmaceutical production
  3.    textile production
  4.    nutrition improvement
 Discuss Question
Answer: Option B. -> pharmaceutical production
Question 14. The first transgenic plants expressing engineered foreign genes were tobacco plants produced by the use of
  1.    Arabidopsis thaliana
  2.    Bacillus thuringiensis
  3.    Agrobacterium tumefaciens
  4.    Streptomyces hygroscopicus
 Discuss Question
Answer: Option C. -> Agrobacterium tumefaciens
Question 15. Transplastomics
  1.    produces genes that are released in pollen
  2.    provides exceptionally low yields of protein products
  3.    offers little opportunity for practical use
  4.    targets genes in the chloroplast
 Discuss Question
Answer: Option D. -> targets genes in the chloroplast
Question 16. Transgenic plants
  1.    are plants that differ in geographical locations
  2.    both (a) and (b)
  3.    contain foreign genes in their cells
  4.    are used to produce human antibodies
 Discuss Question
Answer: Option B. -> both (a) and (b)
Question 17. Low temperatures induce the expression of many cold-induced genes. Transgenic plants with improved cold tolerance have been produced by
  1.    expressing a gene for production of antifreeze (ethylene glycol) in plants
  2.    increasing evaporative cooling from leaf surfaces
  3.    expressing the protein that activates expression of these genes all the time in plants
  4.    cooling plants using the Peltier effect
 Discuss Question
Answer: Option C. -> expressing the protein that activates expression of these genes all the time in plants
Question 18. Nitrilase is encoded by
  1.    gene bxn in Klebsiella pneumoniae
  2.    bar gene in Streptomyces spp
  3.    both (a) and (b)
  4.    none of these
 Discuss Question
Answer: Option A. -> gene bxn in Klebsiella pneumoniae
Question 19. What are the various disadvantages of cross protection?
  1.    Possibility of mutations in inducing mild virus strain
  2.    All of these
  3.    Possibility of unnecessary spread of mild virus
  4.    Possibility of synergism between inducing virus and other unrelated virus
 Discuss Question
Answer: Option B. -> All of these
Question 20. If the goal were to create a plant resistant to an insecticide, which cell-based plant technology would be most effective?
  1.    Mutant selection
  2.    Cybridization
  3.    Clonal propagation
  4.    Protoplast fusion
 Discuss Question
Answer: Option A. -> Mutant selection

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