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MCQs

Total Questions : 65 | Page 5 of 7 pages
Question 41. The initial phase of uptake of toxicant is very fast.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 42. Which of the following phases doesn’t lead to bio accumulation in aquatic organism?
  1.    Accumulation phase
  2.    Steady-state
  3.    Elimination phase
  4.    Death phase
 Discuss Question
Answer: Option D. -> Death phase
Answer: (d).Death phase
Question 43. Aquatic algae ingest metals by formation of coordination complexes.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 44. Bio accumulation through roots gets absorbed in the root hair zone.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 45. The toxicant accumulation can occur by direct absorption from the medium and ________
  1.    Toxification
  2.    Food chain transfer
  3.    Biochemical degradation
  4.    Potassium
 Discuss Question
Answer: Option B. -> Food chain transfer
Answer: (b).Food chain transfer
Question 46. In young organism, steady state can be achieved very fast.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 47. Which of the following factor doesn’t influence the rate of Bioaccumulation by food?
  1.    Temperature
  2.    Pressure
  3.    Food type
  4.    Size of animal
 Discuss Question
Answer: Option B. -> Pressure
Answer: (b).Pressure
Question 48. The time to reach half of the concentration of the toxicant is a function of environmental concentration and _______________
  1.    Membrane permeability rate
  2.    Partial coefficient
  3.    Rate of active transport
  4.    Rate of active transport
 Discuss Question
Answer: Option B. -> Partial coefficient
Answer: (b).Partial coefficient
Question 49. Sometimes organism metabolizes the accumulated toxicant to facilitate its own growth.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 50. At plateau of bio accumulation, rate of uptake is equal to rate of elimination.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True

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