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MCQs

Total Questions : 159 | Page 2 of 16 pages
Question 11. To maintain the pH of the culture
  1.    organic acid such as citric, fumaric, malic and succinic acid is used
  2.    synthetic buffers such as Tris, MES or HEPS are used
  3.    both (a) and (b)
  4.    ammonium salts are used
 Discuss Question
Answer: Option C. -> both (a) and (b)
Answer: (c).both (a) and (b)
Question 12. Which of the following is not true about nurse or conditioned medium?
  1.    It is liquid removed from the suspension of fast growing cells
  2.    It contains uncharacterized growth factor released by growing cells
  3.    It is used in the culture of regenerating protoplast
  4.    it is removed aseptically from the culture and is autoclaved before use
 Discuss Question
Answer: Option D. -> it is removed aseptically from the culture and is autoclaved before use
Answer: (d).it is removed aseptically from the culture and is autoclaved before use
Question 13. Which of the following is not an auxin?
  1.    Indole acetic acid (IAA)
  2.    Naphthalenacetic acid (NAA)
  3.    zeatin
  4.    Indole butyric acid
 Discuss Question
Answer: Option C. -> zeatin
Answer: (c).zeatin
Question 14. Which of the following is not a cytokinin?
  1.    2,4-dichlorophenoxyacetic acid
  2.    6 benzylaminopurine
  3.    Zeatin
  4.    Kinetin
 Discuss Question
Answer: Option A. -> 2,4-dichlorophenoxyacetic acid
Answer: (a).2,4-dichlorophenoxyacetic acid
Question 15. Very high sugar concentration (40-100 g/l) have been used
  1.    in specialized secondary metabolite production
  2.    to adjust the osmotic potential of the media in short term treatment for regeneration
  3.    Both (a) and (b)
  4.    none of these
 Discuss Question
Answer: Option C. -> Both (a) and (b)
Answer: (c).Both (a) and (b)
Question 16. Silver thiosulphate is added to culture medium as it helps to
  1.    maintain the pH
  2.    remove toxic phenolics from plant cells
  3.    prevent the gaseous plant hormone, ethylene dioxide from accumulating to detrimental condition.
  4.    all of the above
 Discuss Question
Answer: Option C. -> prevent the gaseous plant hormone, ethylene dioxide from accumulating to detrimental condition.
Answer: (c).prevent the gaseous plant hormone, ethylene dioxide from accumulating to detrimental condition.
Question 17. In plant cell culture media, auxins and cytokinins are used in the range of
  1.    l-50μM
  2.    50-100μM
  3.    100-125μM
  4.    more than 125μM
 Discuss Question
Answer: Option A. -> l-50μM
Answer: (a).l-50μM
Question 18. Concentration of sucrose generally used in plant cell culture media is
  1.    10-15 g/l
  2.    20-30 g/l
  3.    40-50 g/l
  4.    60-70 g/l
 Discuss Question
Answer: Option B. -> 20-30 g/l
Answer: (b).20-30 g/l
Question 19. Which is not true about a photon?
  1.    It is a packet of light energy
  2.    The shorter the wavelength, the greater the energy of the photons
  3.    It is trapped by photosynthetic unit
  4.    It donates electron to reduce carbon dioxide to glucose
 Discuss Question
Answer: Option D. -> It donates electron to reduce carbon dioxide to glucose
Answer: (d).It donates electron to reduce carbon dioxide to glucose
Question 20. "The universe tends towards maximum disorder" is stated by
  1.    first law of thermodynamics
  2.    second law of thermodynamics
  3.    third law of thermodynamics
  4.    none of the above
 Discuss Question
Answer: Option B. -> second law of thermodynamics
Answer: (b).second law of thermodynamics

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