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MCQs

Total Questions : 82 | Page 6 of 9 pages
Question 51. There is reduction as well as oxidation during photosynthesis hence called as
  1.    redox process
  2.    oxidative reaction
  3.    reduction
  4.    neutral process
 Discuss Question
Answer: Option A. -> redox process
Answer: (a).redox process
Question 52. Second pay off phase of cellular respiration is called
  1.    preparatory phase
  2.    net phase
  3.    respiratory phase
  4.    oxidative phase
 Discuss Question
Answer: Option D. -> oxidative phase
Answer: (d).oxidative phase
Question 53. Instrument which helps to measure ability of pigment to absorb light is called
  1.    thermometer
  2.    spectrophotometer
  3.    hydrometer
  4.    ceilometers
 Discuss Question
Answer: Option B. -> spectrophotometer
Answer: (b).spectrophotometer
Question 54. Alternative path adopted by photo excited electrons is
  1.    cyclic electron flow
  2.    non-cyclic electron flow
  3.    cyclic neutron flow
  4.    non-cyclic proton flow
 Discuss Question
Answer: Option A. -> cyclic electron flow
Answer: (a).cyclic electron flow
Question 55. Synthesis of ATP by initiation of reaction with light is called
  1.    photophosphorylation
  2.    photolysis
  3.    photo system
  4.    photosynthesis
 Discuss Question
Answer: Option A. -> photophosphorylation
Answer: (a).photophosphorylation
Question 56. During dark reactions, photosynthesis takes place by help of certain enzymes through cycle called
  1.    kerb's cycle
  2.    life cycle
  3.    calvin cycle
  4.    nitrogen cycle
 Discuss Question
Answer: Option C. -> calvin cycle
Answer: (c).calvin cycle
Question 57. When there is no exchange between leaves and atmosphere due to balance of respiration and photosynthesis, this condition is known as
  1.    balanced point
  2.    unbalanced point
  3.    redemption point
  4.    compensation point
 Discuss Question
Answer: Option D. -> compensation point
Answer: (d).compensation point
Question 58. After decomposition of household sewage, the dried substance results in
  1.    sludge
  2.    fertilizer
  3.    land fill
  4.    all of above
 Discuss Question
Answer: Option D. -> all of above
Answer: (d).all of above
Question 59. Study of energy relationships and energy conversions in biological systems is termed as
  1.    microbiology
  2.    biotechnology
  3.    bioenergetics
  4.    biophysics
 Discuss Question
Answer: Option C. -> bioenergetics
Answer: (c).bioenergetics
Question 60. Before discharging decomposed sewage into rivers and seas, the
  1.    water is filtered only
  2.    pathogens are removed only
  3.    pH of sewage is neutralized
  4.    water is filtered and pathogens are removed
 Discuss Question
Answer: Option D. -> water is filtered and pathogens are removed
Answer: (d).water is filtered and pathogens are removed

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