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MCQs

Total Questions : 40 | Page 2 of 4 pages
Question 11. What is/are the benefit(s) of micropropagation or clonal propagation?
  1.    Rapid multiplication of superior clones
  2.    Multiplication of sexually derived sterile hybrids
  3.    Multiplication of disease free plants
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these
Question 12. The phenomenon of the reversion of mature cells to the meristematic state leading to the formation of callus is known as
  1.    redifferentiation
  2.    dedifferentiation
  3.    either (a) or (b)
  4.    none of these
 Discuss Question
Answer: Option B. -> dedifferentiation
Question 13. The ability of the component cells of callus to form a whole plant is known as
  1.    none of these
  2.    either (a) or (b)
  3.    redifferentiation
  4.    dedifferentiation
 Discuss Question
Answer: Option C. -> redifferentiation
Question 14. Subculturing is similar to propagation by cuttings because
  1.    they both use in vitro growing conditions
  2.    it uses scions to produce new microshoots
  3.    All of these
  4.    it separates multiple microshoots and places them in a medium
 Discuss Question
Answer: Option D. -> it separates multiple microshoots and places them in a medium
Question 15. Cell fusion method includes the preparation of large number of
  1.    plant cells stripped of their cell wall
  2.    cells from different species
  3.    plant cells with cell wall
  4.    single plant cell stripped of their cell wall
 Discuss Question
Answer: Option D. -> single plant cell stripped of their cell wall
Question 16. When plated only in nutrient medium, how much time is required for the protoplast to synthesize new cell wall?
  1.    5-10 days
  2.    10-15 days
  3.    15-17 days
  4.    2-5 days
 Discuss Question
Answer: Option A. -> 5-10 days
Question 17. Agrobacterium based gene transfer is efficient
  1.    only with dicots
  2.    only with monocots
  3.    with both monocots and dicots
  4.    with majority monocots and few dicots
 Discuss Question
Answer: Option A. -> only with dicots
Question 18. Cellular totipotency is the property of
  1.    bacteria
  2.    all of these
  3.    animals
  4.    plants
 Discuss Question
Answer: Option D. -> plants
Question 19.  A(n) __________ is an excised piece of leaf or stem tissue used in micropropagation.
  1.    microshoot
  2.    medium
  3.    explant
  4.    scion
 Discuss Question
Answer: Option C. -> explant
Question 20.  Which of the following is considered as the disadvantage of conventional plant tissue culture for clonal propagation?
  1.    Multiplication of sexually derived sterile hybrids
  2.    Less multiplication of disease free plants
  3.    Storage and transportation of propogates
  4.    Both (b) and (c)
 Discuss Question
Answer: Option C. -> Storage and transportation of propogates

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