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MCQs

Total Questions : 61 | Page 4 of 7 pages
Question 31. Who among the following coined the term Biotechnology?
  1.    Karl Ereky
  2.    James Clarke
  3.    Paul Terasaky
  4.    Clarke and Sommer
 Discuss Question
Answer: Option A. -> Karl Ereky
Answer: (a).Karl Ereky
Question 32. A group of about 300 chlorophyll molecule acting together to trap photons and transfer energy to the pigment molecule at the reaction center may be called as
  1.    harvesting unit
  2.    reaction center
  3.    photosynthetic unit
  4.    chloromass
 Discuss Question
Answer: Option C. -> photosynthetic unit
Answer: (c).photosynthetic unit
Question 33. The chief source of nitrogen for green plants is
  1.    atmospheric nitrogen
  2.    nitrates
  3.    ammonium salts
  4.    low molecular weight- organic nitrogenous compound
 Discuss Question
Answer: Option B. -> nitrates
Answer: (b).nitrates
Question 34. What type of long chain alcohol is esterified to plant chlorophyll molecules?
  1.    Dolichol
  2.    Farnesol
  3.    Phytol
  4.    None of these
 Discuss Question
Answer: Option C. -> Phytol
Answer: (c).Phytol
Question 35. Plants absorb nitrates from soil and convert them into
  1.    urea
  2.    ammonia
  3.    nitrogen
  4.    none of these
 Discuss Question
Answer: Option B. -> ammonia
Answer: (b).ammonia
Question 36. In the presence of carbon monoxide, nitrogen fixation
  1.    increases
  2.    decreases
  3.    inhibits
  4.    none of these
 Discuss Question
Answer: Option C. -> inhibits
Answer: (c).inhibits
Question 37. During nitrogen fixation the enzyme nitrogenase catalyse the reaction. The reaction is high energy demanding which require approximately
  1.    12 ATP
  2.    18 ATP
  3.    25 ATP
  4.    7 ATP
 Discuss Question
Answer: Option B. -> 18 ATP
Answer: (b).18 ATP
Question 38. Which of the following molecule is produced from the fixation of CO2 in C4 plants?
  1.    Malate
  2.    Oxaloacetate
  3.    Pyruvate
  4.    Alpha-ketoglutarate
 Discuss Question
Answer: Option B. -> Oxaloacetate
Answer: (b).Oxaloacetate
Question 39.  Which group of plants has the greatest diversity (i.e. the most species) living today?
  1.    Bryophyta
  2.    Lycophyta
  3.    Gymnosperms
  4.    Angiosperms
 Discuss Question
Answer: Option D. -> Angiosperms
Question 40.  Which group of land plants is most restricted to moist environments?
  1.    Lycophyta
  2.    Sphenophyta
  3.    Bryophyta
  4.    Angiosperms
 Discuss Question
Answer: Option C. -> Bryophyta

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