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MCQs

Total Questions : 189 | Page 8 of 19 pages
Question 71. Agrobacterium tumefaciens form ______ plasmids and Agrobacterium rhizogenes form _______ plasmids.
  1.    root inducing, tumour inducing
  2.    tumour inducing, root inducing
  3.    tumour inducing, shoot inducing
  4.    non-tumour inducing, shoot inducing
 Discuss Question
Answer: Option B. -> tumour inducing, root inducing
Answer: (b).tumour inducing, root inducing
Question 72. The disease crown gall is caused by which bacteria?
  1.    Agrobacterium tumefaciens
  2.    Agrobacterium rhizogenes
  3.    Agrobacterium tumefaciens & rhizogenes bacterium causes the disease crown gall
  4.    Any bacteria belonging to genera Rhizobium
 Discuss Question
Answer: Option A. -> Agrobacterium tumefaciens
Answer: (a).Agrobacterium tumefaciens
Question 73. Integration of DNA into the Chlamydomonas genome is via homologous recombination.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 74. The region which is transferred from bacterium to the nucleus of the plant cell is called as T-DNA.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 75. Transfer of T DNA depends on a set of genes called as ______ if they are present on ________
  1.    vir, chromosome
  2.    chv, tumour inducing plasmid
  3.    chv, chromosome
  4.    vir, whether they are present on tumour inducing plasmid or chromosome
 Discuss Question
Answer: Option C. -> chv, chromosome
Answer: (c).chv, chromosome
Question 76. What is the function of onc genes in TDNA?
  1.    Tumour suppressing potential
  2.    Tumour inducing potential
  3.    Either tumour inducing or suppressing depending on the conditions
  4.    Act as replicative genes
 Discuss Question
Answer: Option B. -> Tumour inducing potential
Answer: (b).Tumour inducing potential
Question 77. If a small intermediate vector system is used along with a selectable marker, then it is called as __________
  1.    fusion plasmids
  2.    hybrid plasmids
  3.    co-integrative plasmids
  4.    complex plasmids
 Discuss Question
Answer: Option C. -> co-integrative plasmids
Answer: (c).co-integrative plasmids
Question 78. Which of the plant growth regulators are produced by TDNA?
  1.    Salicyclic acid
  2.    Cytokinin
  3.    Cytokinin and Auxin
  4.    Jasmonic Acid
 Discuss Question
Answer: Option C. -> Cytokinin and Auxin
Answer: (c).Cytokinin and Auxin
Question 79. Binary vector systems can also be used for transferring the DNA via agrobacterium.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 80. If transfer of DNA from Agrobacterium to plants is done via incubation of explanted material and the vector containing DNA of interest and then selection is done via selectable marker then this method is called as _________
  1.    transformation
  2.    co-cultivation
  3.    co-transformation
  4.    floral dipping
 Discuss Question
Answer: Option B. -> co-cultivation
Answer: (b).co-cultivation

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