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MCQs

Total Questions : 222 | Page 9 of 23 pages
Question 81. The encapsulation of somatic embryos can be carried out by
  1.    automatic encapsulation process
  2.    gel complexation
  3.    both (a) and (b)
  4.    coating proteins
 Discuss Question
Answer: Option C. -> both (a) and (b)
Answer: (c).both (a) and (b)
Question 82. Synthetic seeds are
  1.    artificially synthesized seeds
  2.    somatic embryos encapsulated in suitable matrix
  3.    seeds of plants modified genetically
  4.    none of these
 Discuss Question
Answer: Option B. -> somatic embryos encapsulated in suitable matrix
Answer: (b).somatic embryos encapsulated in suitable matrix
Question 83. Recalcitrant seeds are
  1.    resistant to drying and freezing temperature
  2.    killed by drying and freezing temperature
  3.    both (a) and (b)
  4.    none of above
 Discuss Question
Answer: Option B. -> killed by drying and freezing temperature
Answer: (b).killed by drying and freezing temperature
Question 84. Which of the following is true about T DNA?
  1.    Integration of T DNA can occur at many different, apparently random, sites in the plant nuclear DNA
  2.    Integration of T DNA occurs only at one specific sites in the plant nuclear DNA
  3.    Integration of T DNA occurs at two specific sites in the plant nuclear DNA
  4.    Integration of T DNA occurs at one site that may be random in the plant nuclear DNA
 Discuss Question
Answer: Option A. -> Integration of T DNA can occur at many different, apparently random, sites in the plant nuclear DNA
Answer: (a).Integration of T DNA can occur at many different, apparently random, sites in the plant nuclear DNA
Question 85. The left segment of octopine T-DNA (TL) is necessary for
  1.    enzymes for agropine biosynthesis
  2.    tumour formation
  3.    conjugative transfer
  4.    all of these
 Discuss Question
Answer: Option B. -> tumour formation
Answer: (b).tumour formation
Question 86. Which of the following is not true about the direct repeats flanking T-DNA?
  1.    They are conserved between nopaline and octopine Ti-plasmids
  2.    These repeats are transferred intact to the plant genome
  3.    These are important in integration mechanism
  4.    all of the above
 Discuss Question
Answer: Option B. -> These repeats are transferred intact to the plant genome
Answer: (b).These repeats are transferred intact to the plant genome
Question 87. Which of the following genes are constitutively expressed and control the plant induced activation of other vir genes?
  1.    vir A and vir G
  2.    vir C and vir D
  3.    vir B and vir E
  4.    vir A and vir B
 Discuss Question
Answer: Option A. -> vir A and vir G
Answer: (a).vir A and vir G
Question 88. Microprojectile method of gene transfer in plants involves delivery of DNA
  1.    with the help of micromanipulator
  2.    with the help of bolistics
  3.    with the help of needles
  4.    any of the above
 Discuss Question
Answer: Option B. -> with the help of bolistics
Answer: (b).with the help of bolistics
Question 89. Integrated octopine T DNA occurs as
  1.    single segment
  2.    two segments
  3.    three segments
  4.    four segments
 Discuss Question
Answer: Option B. -> two segments
Answer: (b).two segments
Question 90. Which of the following plant signal molecules regulate the expression of vir B, C, D and E in case of tobacco?
  1.    Acetosyringone
  2.    α-hydroxy syringone
  3.    Both (a) and (b)
  4.    None of these
 Discuss Question
Answer: Option C. -> Both (a) and (b)
Answer: (c).Both (a) and (b)

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