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MCQs

Total Questions : 107 | Page 3 of 11 pages
Question 21. Which of the following gene is transferred to plants that detoxify the herbicide atrazine?
  1.    Nitrilase
  2.    All of these
  3.    Glutathione S-transferase (GST)
  4.    Phosphinothrium acetyl transferase
 Discuss Question
Answer: Option C. -> Glutathione S-transferase (GST)
Question 22. Which of the following dies from Ti plasmid infection?
  1.    Rice
  2.    All of these
  3.    Sorghum
  4.    Corn
 Discuss Question
Answer: Option B. -> All of these
Question 23. Which of the following self-pollinating plant/(s) tend to be homozygous?
  1.    Peas
  2.    Tomato
  3.    Peach
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these
Question 24. Which cell-based plant technology involves the combining of two cells without cell walls from different species?
  1.    Mutant selection
  2.    Protoplast fusion
  3.    Clonal propagation
  4.    Cybridization
 Discuss Question
Answer: Option B. -> Protoplast fusion
Question 25. A naturally occurring variant, possessing characteristics of interest, is identified. This plant is selectively bred. This is an example of
  1.    traditional plant breeding
  2.    none of these
  3.    mutant selection
  4.    transgenic technology
 Discuss Question
Answer: Option A. -> traditional plant breeding
Question 26. Which of the following genes can be used for making resistances against viral infection?
  1.    Genes for capsid protein
  2.    Satellite RNA
  3.    All of these
  4.    Gene for nucleocapsid protein
 Discuss Question
Answer: Option C. -> All of these
Question 27. Cross protection against viruses in transgenic plants can be obtained by
  1.    inoculating the susceptible strain with the coat proteins of virulent strain
  2.    inoculating the susceptible strain with genes of nucleocapsid
  3.    inoculating the susceptible strain of a crop with a mild strain of a virus that helps in developing resistance against more virulent strain
  4.    any of the above
 Discuss Question
Answer: Option C. -> inoculating the susceptible strain of a crop with a mild strain of a virus that helps in developing resistance against more virulent strain
Question 28. Which of the following has been widely used to provide resistance against plant viruses?
  1.    Expression of anti-virus genes in vectors that transmit viruses
  2.    Expression of virus coat protein genes in transgenic plants
  3.    Expression of ribonuclease (RNase) genes in host plants
  4.    Virus resistance genes from bacteria
 Discuss Question
Answer: Option B. -> Expression of virus coat protein genes in transgenic plants
Question 29. Which cell-based technology endows a cell with increased ability to harness energy?
  1.    Mibridization
  2.    Chlybridization
  3.    Cybridization
  4.    Protoplast fusion
 Discuss Question
Answer: Option B. -> Chlybridization
Question 30. Bruise resistant tomatoes have been developed by the expression of antisense RNA against
  1.    Sucrose phosphate synthase gene
  2.    glycerol 1 phosphate acyl transferase
  3.    ACC deaminase
  4.    polygalactouranase
 Discuss Question
Answer: Option D. -> polygalactouranase

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