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MCQs

Total Questions : 74 | Page 5 of 8 pages
Question 41.  Establishment of embryogenic cell suspensions with high regeneration potential is a pre-requisite for successful
  1.    protoplast culture
  2.    detection of nucleic acid sequence
  3.    restriction of fragment length polymorphisms
  4.    microinjection
 Discuss Question
Answer: Option A. -> protoplast culture
Question 42.  Which of the following technique can be used to develop nematode resistant plants?
  1.    Embryo-rescue
  2.    Mutation
  3.    Non-recombinant DNA
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these
Question 43. . Commercial sugarcane is heterozygons with germplasm from
  1.    1-3 Saccharum species
  2.    3-5 Saccharum species
  3.    5-7 Saccharum species
  4.    7-9 Saccharum species
 Discuss Question
Answer: Option B. -> 3-5 Saccharum species
Question 44. . The intervention in the communication system of nematodes offer several possibilities of bio control. Which of the following(s) play(s) a very important role in the host recognition?
  1.    Protein
  2.    Lipid
  3.    Carbohydrate moiety
  4.    Minerals
 Discuss Question
Answer: Option C. -> Carbohydrate moiety
Question 45. . Which of the following govern sporophytic self-incompatibility in Brassica?
  1.    Aegilops
  2.    Triticum
  3.    Both (a) and (b)
  4.    S alleles
 Discuss Question
Answer: Option D. -> S alleles
Question 46.  Random amplified polymorphic DNA (RAPD) is a method that
  1.    stimulate production of sense RNA to compensate
  2.    activate the expression of all genes in a biochemical pathway
  3.    eliminate the expression of all genes in a biochemical pathway
  4.    reveals intra-specific variation and diversity between species
 Discuss Question
Answer: Option D. -> reveals intra-specific variation and diversity between species
Question 47. . Which of the following transfers a set of genes encoded in a region called T-DNA of the Ti-plasmid into cells at wound positions?
  1.    A. tumefaciens
  2.    L. peruvianum
  3.    L. birsutum
  4.    A. sterilis
 Discuss Question
Answer: Option A. -> A. tumefaciens
Question 48. . The hybrid embryo can be rescued from damage/collapse by growing it
  1.    at low temperature
  2.    at low pH
  3.    at low water activity
  4.    in artificial medium
 Discuss Question
Answer: Option D. -> in artificial medium
Question 49. . For increased level of mannitol in transgenic tobacco plants which of the following gene is transferred?
  1.    Mannitol dehydrogenase
  2.    Mannitol synthease
  3.    Both (a) and (b)
  4.    Mannitol pyrophosphorylase
 Discuss Question
Answer: Option A. -> Mannitol dehydrogenase
Question 50. . Cytoplast (somatic cell hybridization) is the process in which
  1.    two protoplast along with their nuclei fuse
  2.    a normal protoplast along with an enucleated protoplast fuse
  3.    both (a) and (b)
  4.    two enucleated protoplasts fuse
 Discuss Question
Answer: Option C. -> both (a) and (b)

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