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MCQs

Total Questions : 65 | Page 2 of 7 pages
Question 11. The process of building up of harmful chemicals inside a living organism is called as _______
  1.    Bio-accumulation
  2.    Bio-leaching
  3.    Bio-remediation
  4.    Bio-fortification
 Discuss Question
Answer: Option A. -> Bio-accumulation
Answer: (a).Bio-accumulation
Question 12. The organism is at a risk if the amount of toxin being absorbed is more than that being excreted out of the body.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 13. What is the following step is not included in the bio accumulation process?
  1.    Storage
  2.    Elimination
  3.    Uptake
  4.    Filtration
 Discuss Question
Answer: Option D. -> Filtration
Answer: (d).Filtration
Question 14. What type of chemicals get accumulated in an organism during bio-accumulation process?
  1.    Pesticides or organic chemicals
  2.    Sodium
  3.    Fe
  4.    Potassium
 Discuss Question
Answer: Option A. -> Pesticides or organic chemicals
Answer: (a).Pesticides or organic chemicals
Question 15. What happens when toxins gets accumulated inside the body of an organism?
  1.    Bilirubin poisoning
  2.    Steroids poisoning
  3.    Bile salts poisoning
  4.    Chronic poisoning
 Discuss Question
Answer: Option D. -> Chronic poisoning
Answer: (d).Chronic poisoning
Question 16. In Zooplankton, bio-accumulation can occur through direct surface absorption from aqueous medium.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 17. Which of the following factors doesn’t influence the direct uptake of toxicants during bio-accumulation?
  1.    Membrane permeability rate
  2.    Elimination
  3.    Rate of active transport
  4.    Rate of active transport
 Discuss Question
Answer: Option B. -> Elimination
Answer: (b).Elimination
Question 18. Size of organism is not a deciding factor for bioaccumulation.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 19. The solubility of the toxicant through the membrane is dependent on the strength of the bonds.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 20. Lipophilic compounds can enter the tissues of terrestrial plants through ___________
  1.    Sub-cellular region
  2.    Food chain
  3.    Xenoestrogen
  4.    Root surface
 Discuss Question
Answer: Option D. -> Root surface
Answer: (d).Root surface

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